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ASSEMBLY & COMPILE TOOLS/PLM-2-C/COPYING
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339
ASSEMBLY & COMPILE TOOLS/PLM-2-C/COPYING
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@@ -0,0 +1,339 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
|
||||
675 Mass Ave, Cambridge, MA 02139, USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Library General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
||||
software. If the software is modified by someone else and passed on, we
|
||||
want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
||||
authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
||||
program will individually obtain patent licenses, in effect making the
|
||||
program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
||||
means either the Program or any derivative work under copyright law:
|
||||
that is to say, a work containing the Program or a portion of it,
|
||||
either verbatim or with modifications and/or translated into another
|
||||
language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
|
||||
|
||||
Activities other than copying, distribution and modification are not
|
||||
covered by this License; they are outside its scope. The act of
|
||||
running the Program is not restricted, and the output from the Program
|
||||
is covered only if its contents constitute a work based on the
|
||||
Program (independent of having been made by running the Program).
|
||||
Whether that is true depends on what the Program does.
|
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's
|
||||
source code as you receive it, in any medium, provided that you
|
||||
conspicuously and appropriately publish on each copy an appropriate
|
||||
copyright notice and disclaimer of warranty; keep intact all the
|
||||
notices that refer to this License and to the absence of any warranty;
|
||||
and give any other recipients of the Program a copy of this License
|
||||
along with the Program.
|
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and
|
||||
you may at your option offer warranty protection in exchange for a fee.
|
||||
|
||||
2. You may modify your copy or copies of the Program or any portion
|
||||
of it, thus forming a work based on the Program, and copy and
|
||||
distribute such modifications or work under the terms of Section 1
|
||||
above, provided that you also meet all of these conditions:
|
||||
|
||||
a) You must cause the modified files to carry prominent notices
|
||||
stating that you changed the files and the date of any change.
|
||||
|
||||
b) You must cause any work that you distribute or publish, that in
|
||||
whole or in part contains or is derived from the Program or any
|
||||
part thereof, to be licensed as a whole at no charge to all third
|
||||
parties under the terms of this License.
|
||||
|
||||
c) If the modified program normally reads commands interactively
|
||||
when run, you must cause it, when started running for such
|
||||
interactive use in the most ordinary way, to print or display an
|
||||
announcement including an appropriate copyright notice and a
|
||||
notice that there is no warranty (or else, saying that you provide
|
||||
a warranty) and that users may redistribute the program under
|
||||
these conditions, and telling the user how to view a copy of this
|
||||
License. (Exception: if the Program itself is interactive but
|
||||
does not normally print such an announcement, your work based on
|
||||
the Program is not required to print an announcement.)
|
||||
|
||||
These requirements apply to the modified work as a whole. If
|
||||
identifiable sections of that work are not derived from the Program,
|
||||
and can be reasonably considered independent and separate works in
|
||||
themselves, then this License, and its terms, do not apply to those
|
||||
sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
|
||||
on the Program, the distribution of the whole must be on the terms of
|
||||
this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest
|
||||
your rights to work written entirely by you; rather, the intent is to
|
||||
exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
|
||||
|
||||
In addition, mere aggregation of another work not based on the Program
|
||||
with the Program (or with a work based on the Program) on a volume of
|
||||
a storage or distribution medium does not bring the other work under
|
||||
the scope of this License.
|
||||
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
Appendix: How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) 19yy <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) 19yy name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Library General
|
||||
Public License instead of this License.
|
||||
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP-1.EXE
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BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP-1.EXE
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Binary file not shown.
350
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP.DOC
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ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP.DOC
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@@ -0,0 +1,350 @@
|
||||
|
||||
GZIP(1) USER COMMANDS GZIP(1)
|
||||
|
||||
NAME
|
||||
gzip, gunzip, zcat - compress or expand files
|
||||
|
||||
SYNOPSIS
|
||||
gzip [ -acdfhlLnNrtvV19 ] [-S suffix] [ name ... ]
|
||||
gunzip [ -acfhlLnNrtvV ] [-S suffix] [ name ... ]
|
||||
zcat [ -fhLV ] [ name ... ]
|
||||
|
||||
DESCRIPTION
|
||||
Gzip reduces the size of the named files using Lempel-Ziv
|
||||
coding (LZ77). Whenever possible, each file is replaced by
|
||||
one with the extension .gz, while keeping the same ownership
|
||||
modes, access and modification times. (The default exten-
|
||||
sion is -gz for VMS, z for MSDOS, OS/2 FAT, Windows NT FAT
|
||||
and Atari.) If no files are specified, or if a file name is
|
||||
"-", the standard input is compressed to the standard out-
|
||||
put. Gzip will only attempt to compress regular files. In
|
||||
particular, it will ignore symbolic links.
|
||||
|
||||
If the compressed file name is too long for its file system,
|
||||
gzip truncates it. Gzip attempts to truncate only the parts
|
||||
of the file name longer than 3 characters. (A part is del-
|
||||
imited by dots.) If the name consists of small parts only,
|
||||
the longest parts are truncated. For example, if file names
|
||||
are limited to 14 characters, gzip.msdos.exe is compressed
|
||||
to gzi.msd.exe.gz. Names are not truncated on systems which
|
||||
do not have a limit on file name length.
|
||||
|
||||
By default, gzip keeps the original file name and timestamp
|
||||
in the compressed file. These are used when decompressing
|
||||
the file with the -N option. This is useful when the
|
||||
compressed file name was truncated or when the time stamp
|
||||
was not preserved after a file transfer.
|
||||
|
||||
Compressed files can be restored to their original form
|
||||
using gzip -d or gunzip or zcat. If the original name saved
|
||||
in the compressed file is not suitable for its file system,
|
||||
a new name is constructed from the original one to make it
|
||||
legal.
|
||||
|
||||
gunzip takes a list of files on its command line and
|
||||
replaces each file whose name ends with .gz, -gz, .z, -z, _z
|
||||
or .Z and which begins with the correct magic number with an
|
||||
uncompressed file without the original extension. gunzip
|
||||
also recognizes the special extensions .tgz and .taz as
|
||||
shorthands for .tar.gz and .tar.Z respectively. When
|
||||
compressing, gzip uses the .tgz extension if necessary
|
||||
instead of truncating a file with a .tar extension.
|
||||
|
||||
gunzip can currently decompress files created by gzip, zip,
|
||||
compress, compress -H or pack. The detection of the input
|
||||
format is automatic. When using the first two formats,
|
||||
gunzip checks a 32 bit CRC. For pack, gunzip checks the
|
||||
uncompressed length. The standard compress format was not
|
||||
designed to allow consistency checks. However gunzip is
|
||||
sometimes able to detect a bad .Z file. If you get an error
|
||||
when uncompressing a .Z file, do not assume that the .Z file
|
||||
is correct simply because the standard uncompress does not
|
||||
complain. This generally means that the standard uncompress
|
||||
does not check its input, and happily generates garbage out-
|
||||
put. The SCO compress -H format (lzh compression method)
|
||||
does not include a CRC but also allows some consistency
|
||||
checks.
|
||||
|
||||
Files created by zip can be uncompressed by gzip only if
|
||||
they have a single member compressed with the 'deflation'
|
||||
method. This feature is only intended to help conversion of
|
||||
tar.zip files to the tar.gz format. To extract zip files
|
||||
with several members, use unzip instead of gunzip.
|
||||
|
||||
zcat is identical to gunzip -c. (On some systems, zcat may
|
||||
be installed as gzcat to preserve the original link to
|
||||
compress.) zcat uncompresses either a list of files on the
|
||||
command line or its standard input and writes the
|
||||
uncompressed data on standard output. zcat will uncompress
|
||||
files that have the correct magic number whether they have a
|
||||
.gz suffix or not.
|
||||
|
||||
Gzip uses the Lempel-Ziv algorithm used in zip and PKZIP.
|
||||
The amount of compression obtained depends on the size of
|
||||
the input and the distribution of common substrings. Typi-
|
||||
cally, text such as source code or English is reduced by
|
||||
60-70%. Compression is generally much better than that
|
||||
achieved by LZW (as used in compress), Huffman coding (as
|
||||
used in pack), or adaptive Huffman coding (compact).
|
||||
|
||||
Compression is always performed, even if the compressed file
|
||||
is slightly larger than the original. The worst case expan-
|
||||
sion is a few bytes for the gzip file header, plus 5 bytes
|
||||
every 32K block, or an expansion ratio of 0.015% for large
|
||||
files. Note that the actual number of used disk blocks
|
||||
almost never increases. gzip preserves the mode, ownership
|
||||
and timestamps of files when compressing or decompressing.
|
||||
|
||||
OPTIONS
|
||||
-a --ascii
|
||||
Ascii text mode: convert end-of-lines using local con-
|
||||
ventions. This option is supported only on some non-
|
||||
Unix systems. For MSDOS, CR LF is converted to LF when
|
||||
compressing, and LF is converted to CR LF when
|
||||
decompressing.
|
||||
|
||||
-c --stdout --to-stdout
|
||||
Write output on standard output; keep original files
|
||||
unchanged. If there are several input files, the out-
|
||||
put consists of a sequence of independently compressed
|
||||
members. To obtain better compression, concatenate all
|
||||
input files before compressing them.
|
||||
|
||||
-d --decompress --uncompress
|
||||
Decompress.
|
||||
|
||||
-f --force
|
||||
Force compression or decompression even if the file has
|
||||
multiple links or the corresponding file already
|
||||
exists, or if the compressed data is read from or writ-
|
||||
ten to a terminal. If the input data is not in a format
|
||||
recognized by gzip, and if the option --stdout is also
|
||||
given, copy the input data without change to the stan-
|
||||
dard ouput: let zcat behave as cat. If -f is not given,
|
||||
and when not running in the background, gzip prompts to
|
||||
verify whether an existing file should be overwritten.
|
||||
|
||||
-h --help
|
||||
Display a help screen and quit.
|
||||
|
||||
-l --list
|
||||
For each compressed file, list the following fields:
|
||||
|
||||
compressed size: size of the compressed file
|
||||
uncompressed size: size of the uncompressed file
|
||||
ratio: compression ratio (0.0% if unknown)
|
||||
uncompressed_name: name of the uncompressed file
|
||||
|
||||
The uncompressed size is given as -1 for files not in
|
||||
gzip format, such as compressed .Z files. To get the
|
||||
uncompressed size for such a file, you can use:
|
||||
|
||||
zcat file.Z | wc -c
|
||||
|
||||
In combination with the --verbose option, the following
|
||||
fields are also displayed:
|
||||
|
||||
method: compression method
|
||||
crc: the 32-bit CRC of the uncompressed data
|
||||
date & time: time stamp for the uncompressed file
|
||||
|
||||
The compression methods currently supported are
|
||||
deflate, compress, lzh (SCO compress -H) and pack. The
|
||||
crc is given as ffffffff for a file not in gzip format.
|
||||
|
||||
With --name, the uncompressed name, date and time are
|
||||
those stored within the compress file if present.
|
||||
|
||||
With --verbose, the size totals and compression ratio
|
||||
for all files is also displayed, unless some sizes are
|
||||
unknown. With --quiet, the title and totals lines are
|
||||
not displayed.
|
||||
|
||||
-L --license
|
||||
Display the gzip license and quit.
|
||||
|
||||
-n --no-name
|
||||
When compressing, do not save the original file name
|
||||
and time stamp by default. (The original name is always
|
||||
saved if the name had to be truncated.) When
|
||||
decompressing, do not restore the original file name if
|
||||
present (remove only the gzip suffix from the
|
||||
compressed file name) and do not restore the original
|
||||
time stamp if present (copy it from the compressed
|
||||
file). This option is the default when decompressing.
|
||||
|
||||
-N --name
|
||||
When compressing, always save the original file name
|
||||
and time stamp; this is the default. When decompress-
|
||||
ing, restore the original file name and time stamp if
|
||||
present. This option is useful on systems which have a
|
||||
limit on file name length or when the time stamp has
|
||||
been lost after a file transfer.
|
||||
|
||||
-q --quiet
|
||||
Suppress all warnings.
|
||||
|
||||
-r --recursive
|
||||
Travel the directory structure recursively. If any of
|
||||
the file names specified on the command line are direc-
|
||||
tories, gzip will descend into the directory and
|
||||
compress all the files it finds there (or decompress
|
||||
them in the case of gunzip ).
|
||||
|
||||
-S .suf --suffix .suf
|
||||
Use suffix .suf instead of .gz. Any suffix can be
|
||||
given, but suffixes other than .z and .gz should be
|
||||
avoided to avoid confusion when files are transferred
|
||||
to other systems. A null suffix forces gunzip to try
|
||||
decompression on all given files regardless of suffix,
|
||||
as in:
|
||||
|
||||
gunzip -S "" * (*.* for MSDOS)
|
||||
|
||||
Previous versions of gzip used the .z suffix. This was
|
||||
changed to avoid a conflict with pack(1).
|
||||
|
||||
-t --test
|
||||
Test. Check the compressed file integrity.
|
||||
|
||||
-v --verbose
|
||||
Verbose. Display the name and percentage reduction for
|
||||
each file compressed or decompressed.
|
||||
|
||||
-V --version
|
||||
Version. Display the version number and compilation
|
||||
options then quit.
|
||||
|
||||
-# --fast --best
|
||||
Regulate the speed of compression using the specified
|
||||
digit #, where -1 or --fast indicates the fastest
|
||||
compression method (less compression) and -9 or --best
|
||||
indicates the slowest compression method (best compres-
|
||||
sion). The default compression level is -6 (that is,
|
||||
biased towards high compression at expense of speed).
|
||||
|
||||
ADVANCED USAGE
|
||||
Multiple compressed files can be concatenated. In this case,
|
||||
gunzip will extract all members at once. For example:
|
||||
|
||||
gzip -c file1 > foo.gz
|
||||
gzip -c file2 >> foo.gz
|
||||
|
||||
Then
|
||||
gunzip -c foo
|
||||
|
||||
is equivalent to
|
||||
|
||||
cat file1 file2
|
||||
|
||||
In case of damage to one member of a .gz file, other members
|
||||
can still be recovered (if the damaged member is removed).
|
||||
However, you can get better compression by compressing all
|
||||
members at once:
|
||||
|
||||
cat file1 file2 | gzip > foo.gz
|
||||
|
||||
compresses better than
|
||||
|
||||
gzip -c file1 file2 > foo.gz
|
||||
|
||||
If you want to recompress concatenated files to get better
|
||||
compression, do:
|
||||
|
||||
gzip -cd old.gz | gzip > new.gz
|
||||
|
||||
If a compressed file consists of several members, the
|
||||
uncompressed size and CRC reported by the --list option
|
||||
applies to the last member only. If you need the
|
||||
uncompressed size for all members, you can use:
|
||||
|
||||
gzip -cd file.gz | wc -c
|
||||
|
||||
If you wish to create a single archive file with multiple
|
||||
members so that members can later be extracted indepen-
|
||||
dently, use an archiver such as tar or zip. GNU tar supports
|
||||
the -z option to invoke gzip transparently. gzip is designed
|
||||
as a complement to tar, not as a replacement.
|
||||
|
||||
ENVIRONMENT
|
||||
The environment variable GZIP can hold a set of default
|
||||
options for gzip. These options are interpreted first and
|
||||
can be overwritten by explicit command line parameters. For
|
||||
example:
|
||||
for sh: GZIP="-8v --name"; export GZIP
|
||||
for csh: setenv GZIP "-8v --name"
|
||||
for MSDOS: set GZIP=-8v --name
|
||||
|
||||
On Vax/VMS, the name of the environment variable is
|
||||
GZIP_OPT, to avoid a conflict with the symbol set for invo-
|
||||
cation of the program.
|
||||
|
||||
SEE ALSO
|
||||
znew(1), zcmp(1), zmore(1), zforce(1), gzexe(1), zip(1),
|
||||
unzip(1), compress(1), pack(1), compact(1)
|
||||
|
||||
DIAGNOSTICS
|
||||
Exit status is normally 0; if an error occurs, exit status
|
||||
is 1. If a warning occurs, exit status is 2.
|
||||
|
||||
Usage: gzip [-cdfhlLnNrtvV19] [-S suffix] [file ...]
|
||||
Invalid options were specified on the command line.
|
||||
file: not in gzip format
|
||||
The file specified to gunzip has not been
|
||||
compressed.
|
||||
file: Corrupt input. Use zcat to recover some data.
|
||||
The compressed file has been damaged. The data up to
|
||||
the point of failure can be recovered using
|
||||
zcat file > recover
|
||||
file: compressed with xx bits, can only handle yy bits
|
||||
File was compressed (using LZW) by a program that
|
||||
could deal with more bits than the decompress code
|
||||
on this machine. Recompress the file with gzip,
|
||||
which compresses better and uses less memory.
|
||||
file: already has .gz suffix -- no change
|
||||
The file is assumed to be already compressed.
|
||||
Rename the file and try again.
|
||||
file already exists; do you wish to overwrite (y or n)?
|
||||
Respond "y" if you want the output file to be
|
||||
replaced; "n" if not.
|
||||
gunzip: corrupt input
|
||||
A SIGSEGV violation was detected which usually means
|
||||
that the input file has been corrupted.
|
||||
xx.x%
|
||||
Percentage of the input saved by compression.
|
||||
(Relevant only for -v and -l.)
|
||||
-- not a regular file or directory: ignored
|
||||
When the input file is not a regular file or direc-
|
||||
tory, (e.g. a symbolic link, socket, FIFO, device
|
||||
file), it is left unaltered.
|
||||
-- has xx other links: unchanged
|
||||
The input file has links; it is left unchanged. See
|
||||
ln(1) for more information. Use the -f flag to force
|
||||
compression of multiply-linked files.
|
||||
|
||||
CAVEATS
|
||||
When writing compressed data to a tape, it is generally
|
||||
necessary to pad the output with zeroes up to a block boun-
|
||||
dary. When the data is read and the whole block is passed to
|
||||
gunzip for decompression, gunzip detects that there is extra
|
||||
trailing garbage after the compressed data and emits a warn-
|
||||
ing by default. You have to use the --quiet option to
|
||||
suppress the warning. This option can be set in the GZIP
|
||||
environment variable as in:
|
||||
for sh: GZIP="-q" tar -xfz --block-compress /dev/rst0
|
||||
for csh: (setenv GZIP -q; tar -xfz --block-compr /dev/rst0
|
||||
|
||||
In the above example, gzip is invoked implicitly by the -z
|
||||
option of GNU tar. Make sure that the same block size (-b
|
||||
option of tar) is used for reading and writing compressed
|
||||
data on tapes. (This example assumes you are using the GNU
|
||||
version of tar.)
|
||||
|
||||
BUGS
|
||||
The --list option reports incorrect sizes if they exceed 2
|
||||
gigabytes. The --list option reports sizes as -1 and crc as
|
||||
ffffffff if the compressed file is on a non seekable media.
|
||||
|
||||
In some rare cases, the --best option gives worse compres-
|
||||
sion than the default compression level (-6). On some highly
|
||||
redundant files, compress compresses better than gzip.
|
||||
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP.EXE
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP.EXE
Normal file
Binary file not shown.
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP386.EXE
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/GZIP386.EXE
Normal file
Binary file not shown.
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLM.ZIP
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLM.ZIP
Normal file
Binary file not shown.
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLM2C
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLM2C
Normal file
Binary file not shown.
339
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/COPYING
Normal file
339
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/COPYING
Normal file
@@ -0,0 +1,339 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
|
||||
675 Mass Ave, Cambridge, MA 02139, USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Library General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
||||
software. If the software is modified by someone else and passed on, we
|
||||
want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
||||
authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
||||
program will individually obtain patent licenses, in effect making the
|
||||
program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
||||
means either the Program or any derivative work under copyright law:
|
||||
that is to say, a work containing the Program or a portion of it,
|
||||
either verbatim or with modifications and/or translated into another
|
||||
language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
|
||||
|
||||
Activities other than copying, distribution and modification are not
|
||||
covered by this License; they are outside its scope. The act of
|
||||
running the Program is not restricted, and the output from the Program
|
||||
is covered only if its contents constitute a work based on the
|
||||
Program (independent of having been made by running the Program).
|
||||
Whether that is true depends on what the Program does.
|
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's
|
||||
source code as you receive it, in any medium, provided that you
|
||||
conspicuously and appropriately publish on each copy an appropriate
|
||||
copyright notice and disclaimer of warranty; keep intact all the
|
||||
notices that refer to this License and to the absence of any warranty;
|
||||
and give any other recipients of the Program a copy of this License
|
||||
along with the Program.
|
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and
|
||||
you may at your option offer warranty protection in exchange for a fee.
|
||||
|
||||
2. You may modify your copy or copies of the Program or any portion
|
||||
of it, thus forming a work based on the Program, and copy and
|
||||
distribute such modifications or work under the terms of Section 1
|
||||
above, provided that you also meet all of these conditions:
|
||||
|
||||
a) You must cause the modified files to carry prominent notices
|
||||
stating that you changed the files and the date of any change.
|
||||
|
||||
b) You must cause any work that you distribute or publish, that in
|
||||
whole or in part contains or is derived from the Program or any
|
||||
part thereof, to be licensed as a whole at no charge to all third
|
||||
parties under the terms of this License.
|
||||
|
||||
c) If the modified program normally reads commands interactively
|
||||
when run, you must cause it, when started running for such
|
||||
interactive use in the most ordinary way, to print or display an
|
||||
announcement including an appropriate copyright notice and a
|
||||
notice that there is no warranty (or else, saying that you provide
|
||||
a warranty) and that users may redistribute the program under
|
||||
these conditions, and telling the user how to view a copy of this
|
||||
License. (Exception: if the Program itself is interactive but
|
||||
does not normally print such an announcement, your work based on
|
||||
the Program is not required to print an announcement.)
|
||||
|
||||
These requirements apply to the modified work as a whole. If
|
||||
identifiable sections of that work are not derived from the Program,
|
||||
and can be reasonably considered independent and separate works in
|
||||
themselves, then this License, and its terms, do not apply to those
|
||||
sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
|
||||
on the Program, the distribution of the whole must be on the terms of
|
||||
this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest
|
||||
your rights to work written entirely by you; rather, the intent is to
|
||||
exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
|
||||
|
||||
In addition, mere aggregation of another work not based on the Program
|
||||
with the Program (or with a work based on the Program) on a volume of
|
||||
a storage or distribution medium does not bring the other work under
|
||||
the scope of this License.
|
||||
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
Appendix: How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) 19yy <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) 19yy name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Library General
|
||||
Public License instead of this License.
|
||||
350
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/GZIP.DOC
Normal file
350
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/GZIP.DOC
Normal file
@@ -0,0 +1,350 @@
|
||||
|
||||
GZIP(1) USER COMMANDS GZIP(1)
|
||||
|
||||
NAME
|
||||
gzip, gunzip, zcat - compress or expand files
|
||||
|
||||
SYNOPSIS
|
||||
gzip [ -acdfhlLnNrtvV19 ] [-S suffix] [ name ... ]
|
||||
gunzip [ -acfhlLnNrtvV ] [-S suffix] [ name ... ]
|
||||
zcat [ -fhLV ] [ name ... ]
|
||||
|
||||
DESCRIPTION
|
||||
Gzip reduces the size of the named files using Lempel-Ziv
|
||||
coding (LZ77). Whenever possible, each file is replaced by
|
||||
one with the extension .gz, while keeping the same ownership
|
||||
modes, access and modification times. (The default exten-
|
||||
sion is -gz for VMS, z for MSDOS, OS/2 FAT, Windows NT FAT
|
||||
and Atari.) If no files are specified, or if a file name is
|
||||
"-", the standard input is compressed to the standard out-
|
||||
put. Gzip will only attempt to compress regular files. In
|
||||
particular, it will ignore symbolic links.
|
||||
|
||||
If the compressed file name is too long for its file system,
|
||||
gzip truncates it. Gzip attempts to truncate only the parts
|
||||
of the file name longer than 3 characters. (A part is del-
|
||||
imited by dots.) If the name consists of small parts only,
|
||||
the longest parts are truncated. For example, if file names
|
||||
are limited to 14 characters, gzip.msdos.exe is compressed
|
||||
to gzi.msd.exe.gz. Names are not truncated on systems which
|
||||
do not have a limit on file name length.
|
||||
|
||||
By default, gzip keeps the original file name and timestamp
|
||||
in the compressed file. These are used when decompressing
|
||||
the file with the -N option. This is useful when the
|
||||
compressed file name was truncated or when the time stamp
|
||||
was not preserved after a file transfer.
|
||||
|
||||
Compressed files can be restored to their original form
|
||||
using gzip -d or gunzip or zcat. If the original name saved
|
||||
in the compressed file is not suitable for its file system,
|
||||
a new name is constructed from the original one to make it
|
||||
legal.
|
||||
|
||||
gunzip takes a list of files on its command line and
|
||||
replaces each file whose name ends with .gz, -gz, .z, -z, _z
|
||||
or .Z and which begins with the correct magic number with an
|
||||
uncompressed file without the original extension. gunzip
|
||||
also recognizes the special extensions .tgz and .taz as
|
||||
shorthands for .tar.gz and .tar.Z respectively. When
|
||||
compressing, gzip uses the .tgz extension if necessary
|
||||
instead of truncating a file with a .tar extension.
|
||||
|
||||
gunzip can currently decompress files created by gzip, zip,
|
||||
compress, compress -H or pack. The detection of the input
|
||||
format is automatic. When using the first two formats,
|
||||
gunzip checks a 32 bit CRC. For pack, gunzip checks the
|
||||
uncompressed length. The standard compress format was not
|
||||
designed to allow consistency checks. However gunzip is
|
||||
sometimes able to detect a bad .Z file. If you get an error
|
||||
when uncompressing a .Z file, do not assume that the .Z file
|
||||
is correct simply because the standard uncompress does not
|
||||
complain. This generally means that the standard uncompress
|
||||
does not check its input, and happily generates garbage out-
|
||||
put. The SCO compress -H format (lzh compression method)
|
||||
does not include a CRC but also allows some consistency
|
||||
checks.
|
||||
|
||||
Files created by zip can be uncompressed by gzip only if
|
||||
they have a single member compressed with the 'deflation'
|
||||
method. This feature is only intended to help conversion of
|
||||
tar.zip files to the tar.gz format. To extract zip files
|
||||
with several members, use unzip instead of gunzip.
|
||||
|
||||
zcat is identical to gunzip -c. (On some systems, zcat may
|
||||
be installed as gzcat to preserve the original link to
|
||||
compress.) zcat uncompresses either a list of files on the
|
||||
command line or its standard input and writes the
|
||||
uncompressed data on standard output. zcat will uncompress
|
||||
files that have the correct magic number whether they have a
|
||||
.gz suffix or not.
|
||||
|
||||
Gzip uses the Lempel-Ziv algorithm used in zip and PKZIP.
|
||||
The amount of compression obtained depends on the size of
|
||||
the input and the distribution of common substrings. Typi-
|
||||
cally, text such as source code or English is reduced by
|
||||
60-70%. Compression is generally much better than that
|
||||
achieved by LZW (as used in compress), Huffman coding (as
|
||||
used in pack), or adaptive Huffman coding (compact).
|
||||
|
||||
Compression is always performed, even if the compressed file
|
||||
is slightly larger than the original. The worst case expan-
|
||||
sion is a few bytes for the gzip file header, plus 5 bytes
|
||||
every 32K block, or an expansion ratio of 0.015% for large
|
||||
files. Note that the actual number of used disk blocks
|
||||
almost never increases. gzip preserves the mode, ownership
|
||||
and timestamps of files when compressing or decompressing.
|
||||
|
||||
OPTIONS
|
||||
-a --ascii
|
||||
Ascii text mode: convert end-of-lines using local con-
|
||||
ventions. This option is supported only on some non-
|
||||
Unix systems. For MSDOS, CR LF is converted to LF when
|
||||
compressing, and LF is converted to CR LF when
|
||||
decompressing.
|
||||
|
||||
-c --stdout --to-stdout
|
||||
Write output on standard output; keep original files
|
||||
unchanged. If there are several input files, the out-
|
||||
put consists of a sequence of independently compressed
|
||||
members. To obtain better compression, concatenate all
|
||||
input files before compressing them.
|
||||
|
||||
-d --decompress --uncompress
|
||||
Decompress.
|
||||
|
||||
-f --force
|
||||
Force compression or decompression even if the file has
|
||||
multiple links or the corresponding file already
|
||||
exists, or if the compressed data is read from or writ-
|
||||
ten to a terminal. If the input data is not in a format
|
||||
recognized by gzip, and if the option --stdout is also
|
||||
given, copy the input data without change to the stan-
|
||||
dard ouput: let zcat behave as cat. If -f is not given,
|
||||
and when not running in the background, gzip prompts to
|
||||
verify whether an existing file should be overwritten.
|
||||
|
||||
-h --help
|
||||
Display a help screen and quit.
|
||||
|
||||
-l --list
|
||||
For each compressed file, list the following fields:
|
||||
|
||||
compressed size: size of the compressed file
|
||||
uncompressed size: size of the uncompressed file
|
||||
ratio: compression ratio (0.0% if unknown)
|
||||
uncompressed_name: name of the uncompressed file
|
||||
|
||||
The uncompressed size is given as -1 for files not in
|
||||
gzip format, such as compressed .Z files. To get the
|
||||
uncompressed size for such a file, you can use:
|
||||
|
||||
zcat file.Z | wc -c
|
||||
|
||||
In combination with the --verbose option, the following
|
||||
fields are also displayed:
|
||||
|
||||
method: compression method
|
||||
crc: the 32-bit CRC of the uncompressed data
|
||||
date & time: time stamp for the uncompressed file
|
||||
|
||||
The compression methods currently supported are
|
||||
deflate, compress, lzh (SCO compress -H) and pack. The
|
||||
crc is given as ffffffff for a file not in gzip format.
|
||||
|
||||
With --name, the uncompressed name, date and time are
|
||||
those stored within the compress file if present.
|
||||
|
||||
With --verbose, the size totals and compression ratio
|
||||
for all files is also displayed, unless some sizes are
|
||||
unknown. With --quiet, the title and totals lines are
|
||||
not displayed.
|
||||
|
||||
-L --license
|
||||
Display the gzip license and quit.
|
||||
|
||||
-n --no-name
|
||||
When compressing, do not save the original file name
|
||||
and time stamp by default. (The original name is always
|
||||
saved if the name had to be truncated.) When
|
||||
decompressing, do not restore the original file name if
|
||||
present (remove only the gzip suffix from the
|
||||
compressed file name) and do not restore the original
|
||||
time stamp if present (copy it from the compressed
|
||||
file). This option is the default when decompressing.
|
||||
|
||||
-N --name
|
||||
When compressing, always save the original file name
|
||||
and time stamp; this is the default. When decompress-
|
||||
ing, restore the original file name and time stamp if
|
||||
present. This option is useful on systems which have a
|
||||
limit on file name length or when the time stamp has
|
||||
been lost after a file transfer.
|
||||
|
||||
-q --quiet
|
||||
Suppress all warnings.
|
||||
|
||||
-r --recursive
|
||||
Travel the directory structure recursively. If any of
|
||||
the file names specified on the command line are direc-
|
||||
tories, gzip will descend into the directory and
|
||||
compress all the files it finds there (or decompress
|
||||
them in the case of gunzip ).
|
||||
|
||||
-S .suf --suffix .suf
|
||||
Use suffix .suf instead of .gz. Any suffix can be
|
||||
given, but suffixes other than .z and .gz should be
|
||||
avoided to avoid confusion when files are transferred
|
||||
to other systems. A null suffix forces gunzip to try
|
||||
decompression on all given files regardless of suffix,
|
||||
as in:
|
||||
|
||||
gunzip -S "" * (*.* for MSDOS)
|
||||
|
||||
Previous versions of gzip used the .z suffix. This was
|
||||
changed to avoid a conflict with pack(1).
|
||||
|
||||
-t --test
|
||||
Test. Check the compressed file integrity.
|
||||
|
||||
-v --verbose
|
||||
Verbose. Display the name and percentage reduction for
|
||||
each file compressed or decompressed.
|
||||
|
||||
-V --version
|
||||
Version. Display the version number and compilation
|
||||
options then quit.
|
||||
|
||||
-# --fast --best
|
||||
Regulate the speed of compression using the specified
|
||||
digit #, where -1 or --fast indicates the fastest
|
||||
compression method (less compression) and -9 or --best
|
||||
indicates the slowest compression method (best compres-
|
||||
sion). The default compression level is -6 (that is,
|
||||
biased towards high compression at expense of speed).
|
||||
|
||||
ADVANCED USAGE
|
||||
Multiple compressed files can be concatenated. In this case,
|
||||
gunzip will extract all members at once. For example:
|
||||
|
||||
gzip -c file1 > foo.gz
|
||||
gzip -c file2 >> foo.gz
|
||||
|
||||
Then
|
||||
gunzip -c foo
|
||||
|
||||
is equivalent to
|
||||
|
||||
cat file1 file2
|
||||
|
||||
In case of damage to one member of a .gz file, other members
|
||||
can still be recovered (if the damaged member is removed).
|
||||
However, you can get better compression by compressing all
|
||||
members at once:
|
||||
|
||||
cat file1 file2 | gzip > foo.gz
|
||||
|
||||
compresses better than
|
||||
|
||||
gzip -c file1 file2 > foo.gz
|
||||
|
||||
If you want to recompress concatenated files to get better
|
||||
compression, do:
|
||||
|
||||
gzip -cd old.gz | gzip > new.gz
|
||||
|
||||
If a compressed file consists of several members, the
|
||||
uncompressed size and CRC reported by the --list option
|
||||
applies to the last member only. If you need the
|
||||
uncompressed size for all members, you can use:
|
||||
|
||||
gzip -cd file.gz | wc -c
|
||||
|
||||
If you wish to create a single archive file with multiple
|
||||
members so that members can later be extracted indepen-
|
||||
dently, use an archiver such as tar or zip. GNU tar supports
|
||||
the -z option to invoke gzip transparently. gzip is designed
|
||||
as a complement to tar, not as a replacement.
|
||||
|
||||
ENVIRONMENT
|
||||
The environment variable GZIP can hold a set of default
|
||||
options for gzip. These options are interpreted first and
|
||||
can be overwritten by explicit command line parameters. For
|
||||
example:
|
||||
for sh: GZIP="-8v --name"; export GZIP
|
||||
for csh: setenv GZIP "-8v --name"
|
||||
for MSDOS: set GZIP=-8v --name
|
||||
|
||||
On Vax/VMS, the name of the environment variable is
|
||||
GZIP_OPT, to avoid a conflict with the symbol set for invo-
|
||||
cation of the program.
|
||||
|
||||
SEE ALSO
|
||||
znew(1), zcmp(1), zmore(1), zforce(1), gzexe(1), zip(1),
|
||||
unzip(1), compress(1), pack(1), compact(1)
|
||||
|
||||
DIAGNOSTICS
|
||||
Exit status is normally 0; if an error occurs, exit status
|
||||
is 1. If a warning occurs, exit status is 2.
|
||||
|
||||
Usage: gzip [-cdfhlLnNrtvV19] [-S suffix] [file ...]
|
||||
Invalid options were specified on the command line.
|
||||
file: not in gzip format
|
||||
The file specified to gunzip has not been
|
||||
compressed.
|
||||
file: Corrupt input. Use zcat to recover some data.
|
||||
The compressed file has been damaged. The data up to
|
||||
the point of failure can be recovered using
|
||||
zcat file > recover
|
||||
file: compressed with xx bits, can only handle yy bits
|
||||
File was compressed (using LZW) by a program that
|
||||
could deal with more bits than the decompress code
|
||||
on this machine. Recompress the file with gzip,
|
||||
which compresses better and uses less memory.
|
||||
file: already has .gz suffix -- no change
|
||||
The file is assumed to be already compressed.
|
||||
Rename the file and try again.
|
||||
file already exists; do you wish to overwrite (y or n)?
|
||||
Respond "y" if you want the output file to be
|
||||
replaced; "n" if not.
|
||||
gunzip: corrupt input
|
||||
A SIGSEGV violation was detected which usually means
|
||||
that the input file has been corrupted.
|
||||
xx.x%
|
||||
Percentage of the input saved by compression.
|
||||
(Relevant only for -v and -l.)
|
||||
-- not a regular file or directory: ignored
|
||||
When the input file is not a regular file or direc-
|
||||
tory, (e.g. a symbolic link, socket, FIFO, device
|
||||
file), it is left unaltered.
|
||||
-- has xx other links: unchanged
|
||||
The input file has links; it is left unchanged. See
|
||||
ln(1) for more information. Use the -f flag to force
|
||||
compression of multiply-linked files.
|
||||
|
||||
CAVEATS
|
||||
When writing compressed data to a tape, it is generally
|
||||
necessary to pad the output with zeroes up to a block boun-
|
||||
dary. When the data is read and the whole block is passed to
|
||||
gunzip for decompression, gunzip detects that there is extra
|
||||
trailing garbage after the compressed data and emits a warn-
|
||||
ing by default. You have to use the --quiet option to
|
||||
suppress the warning. This option can be set in the GZIP
|
||||
environment variable as in:
|
||||
for sh: GZIP="-q" tar -xfz --block-compress /dev/rst0
|
||||
for csh: (setenv GZIP -q; tar -xfz --block-compr /dev/rst0
|
||||
|
||||
In the above example, gzip is invoked implicitly by the -z
|
||||
option of GNU tar. Make sure that the same block size (-b
|
||||
option of tar) is used for reading and writing compressed
|
||||
data on tapes. (This example assumes you are using the GNU
|
||||
version of tar.)
|
||||
|
||||
BUGS
|
||||
The --list option reports incorrect sizes if they exceed 2
|
||||
gigabytes. The --list option reports sizes as -1 and crc as
|
||||
ffffffff if the compressed file is on a non seekable media.
|
||||
|
||||
In some rare cases, the --best option gives worse compres-
|
||||
sion than the default compression level (-6). On some highly
|
||||
redundant files, compress compresses better than gzip.
|
||||
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/GZIP.EXE
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/GZIP.EXE
Normal file
Binary file not shown.
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/GZIP386.EXE
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/GZIP386.EXE
Normal file
Binary file not shown.
1452
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/PLM
Normal file
1452
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/PLM
Normal file
File diff suppressed because it is too large
Load Diff
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/PLM.GZ
Normal file
BIN
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/PLM.GZ
Normal file
Binary file not shown.
1452
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/PLMGZ/plm.shar
Normal file
1452
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/PLMGZ/plm.shar
Normal file
File diff suppressed because it is too large
Load Diff
144
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/README
Normal file
144
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/README
Normal file
@@ -0,0 +1,144 @@
|
||||
This is the file README for the gzip distribution, version 1.2.4.
|
||||
|
||||
gzip (GNU zip) is a compression utility designed to be a replacement
|
||||
for 'compress'. Its main advantages over compress are much better
|
||||
compression and freedom from patented algorithms. The GNU Project
|
||||
uses it as the standard compression program for its system.
|
||||
|
||||
gzip currently uses by default the LZ77 algorithm used in zip 1.9 (the
|
||||
portable pkzip compatible archiver). The gzip format was however
|
||||
designed to accommodate several compression algorithms. See below
|
||||
for a comparison of zip and gzip.
|
||||
|
||||
gunzip can currently decompress files created by gzip, compress or
|
||||
pack. The detection of the input format is automatic. For the
|
||||
gzip format, gunzip checks a 32 bit CRC. For pack, gunzip checks the
|
||||
uncompressed length. The 'compress' format was not designed to allow
|
||||
consistency checks. However gunzip is sometimes able to detect a bad
|
||||
.Z file because there is some redundancy in the .Z compression format.
|
||||
If you get an error when uncompressing a .Z file, do not assume that
|
||||
the .Z file is correct simply because the standard uncompress does not
|
||||
complain. This generally means that the standard uncompress does not
|
||||
check its input, and happily generates garbage output.
|
||||
|
||||
gzip produces files with a .gz extension. Previous versions of gzip
|
||||
used the .z extension, which was already used by the 'pack'
|
||||
Huffman encoder. gunzip is able to decompress .z files (packed
|
||||
or gzip'ed).
|
||||
|
||||
Several planned features are not yet supported (see the file TODO).
|
||||
See the file NEWS for a summary of changes since 0.5. See the file
|
||||
INSTALL for installation instructions. Some answers to frequently
|
||||
asked questions are given in the file INSTALL, please read it. (In
|
||||
particular, please don't ask me once more for an /etc/magic entry.)
|
||||
|
||||
WARNING: on several systems, compiler bugs cause gzip to fail, in
|
||||
particular when optimization options are on. See the section "Special
|
||||
targets" at the end of the INSTALL file for a list of known problems.
|
||||
For all machines, use "make check" to check that gzip was compiled
|
||||
correctly. Try compiling gzip without any optimization if you have a
|
||||
problem.
|
||||
|
||||
Please send all comments and bug reports by electronic mail to:
|
||||
Jean-loup Gailly <jloup@chorus.fr>
|
||||
|
||||
or, if this fails, to bug-gnu-utils@prep.ai.mit.edu.
|
||||
Bug reports should ideally include:
|
||||
|
||||
* The complete output of "gzip -V" (or the contents of revision.h
|
||||
if you can't get gzip to compile)
|
||||
* The hardware and operating system (try "uname -a")
|
||||
* The compiler used to compile (if it is gcc, use "gcc -v")
|
||||
* A description of the bug behavior
|
||||
* The input to gzip, that triggered the bug
|
||||
|
||||
If you send me patches for machines I don't have access to, please test them
|
||||
very carefully. gzip is used for backups, it must be extremely reliable.
|
||||
|
||||
The package crypt++.el is highly recommended to manipulate gzip'ed
|
||||
file from emacs. It recognizes automatically encrypted and compressed
|
||||
files when they are first visited or written. It is available via
|
||||
anonymous ftp to roebling.poly.edu [128.238.5.31] in /pub/crypt++.el.
|
||||
The same directory contains also patches to dired, ange-ftp and info.
|
||||
GNU tar 1.11.2 has a -z option to invoke directly gzip, so you don't have to
|
||||
patch it. The package ftp.uu.net:/languages/emacs-lisp/misc/jka-compr19.el.Z
|
||||
also supports gzip'ed files.
|
||||
|
||||
The znew and gzexe shell scripts provided with gzip benefit from
|
||||
(but do not require) the cpmod utility to transfer file attributes.
|
||||
It is available by anonymous ftp on gatekeeper.dec.com in
|
||||
/.0/usenet/comp.sources.unix/volume11/cpmod.Z.
|
||||
|
||||
The sample programs zread.c, sub.c and add.c in subdirectory sample
|
||||
are provided as examples of useful complements to gzip. Read the
|
||||
comments inside each source file. The perl script ztouch is also
|
||||
provided as example (not installed by default since it relies on perl).
|
||||
|
||||
|
||||
gzip is free software, you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License, a copy of which is
|
||||
provided under the name COPYING. The latest version of gzip are always
|
||||
available by ftp in prep.ai.mit.edu:/pub/gnu, or in any of the prep
|
||||
mirror sites:
|
||||
|
||||
- sources in gzip-*.tar (or .shar or .tar.gz).
|
||||
- Solaris 2 executables in sparc-sun-solaris2/gzip-binaries-*.tar
|
||||
- MSDOS lha self-extracting exe in gzip-msdos-*.exe. Once extracted,
|
||||
copy gzip.exe to gunzip.exe and zcat.exe, or use "gzip -d" to decompress.
|
||||
gzip386.exe runs much faster but only on 386 and above; it is compiled with
|
||||
djgpp 1.10 available in directory omnigate.clarkson.edu:/pub/msdos/djgpp.
|
||||
|
||||
A VMS executable is available in ftp.spc.edu:[.macro32.savesets]gzip-1-*.zip
|
||||
(use [.macro32]unzip.exe to extract). A PRIMOS executable is available
|
||||
in ftp.lysator.liu.se:/pub/primos/run/gzip.run.
|
||||
OS/2 executables (16 and 32 bits versions) are available in
|
||||
ftp.tu-muenchen.de:/pub/comp/os/os2/archiver/gz*-[16,32].zip
|
||||
|
||||
Some ftp servers can automatically make a tar.Z from a tar file. If
|
||||
you are getting gzip for the first time, you can ask for a tar.Z file
|
||||
instead of the much larger tar file.
|
||||
|
||||
Many thanks to those who provided me with bug reports and feedback.
|
||||
See the files THANKS and ChangeLog for more details.
|
||||
|
||||
|
||||
Note about zip vs. gzip:
|
||||
|
||||
The name 'gzip' was a very unfortunate choice, because zip and gzip
|
||||
are two really different programs, although the actual compression and
|
||||
decompression sources were written by the same persons. A different
|
||||
name should have been used for gzip, but it is too late to change now.
|
||||
|
||||
zip is an archiver: it compresses several files into a single archive
|
||||
file. gzip is a simple compressor: each file is compressed separately.
|
||||
Both share the same compression and decompression code for the
|
||||
'deflate' method. unzip can also decompress old zip archives
|
||||
(implode, shrink and reduce methods). gunzip can also decompress files
|
||||
created by compress and pack. zip 1.9 and gzip do not support
|
||||
compression methods other than deflation. (zip 1.0 supports shrink and
|
||||
implode). Better compression methods may be added in future versions
|
||||
of gzip. zip will always stick to absolute compatibility with pkzip,
|
||||
it is thus constrained by PKWare, which is a commercial company. The
|
||||
gzip header format is deliberately different from that of pkzip to
|
||||
avoid such a constraint.
|
||||
|
||||
On Unix, gzip is mostly useful in combination with tar. GNU tar
|
||||
1.11.2 has a -z option to invoke gzip automatically. "tar -z"
|
||||
compresses better than zip, since gzip can then take advantage of
|
||||
redundancy between distinct files. The drawback is that you must
|
||||
scan the whole tar.gz file in order to extract a single file near
|
||||
the end; unzip can directly seek to the end of the zip file. There
|
||||
is no overhead when you extract the whole archive anyway.
|
||||
If a member of a .zip archive is damaged, other files can still
|
||||
be recovered. If a .tar.gz file is damaged, files beyond the failure
|
||||
point cannot be recovered. (Future versions of gzip will have
|
||||
error recovery features.)
|
||||
|
||||
gzip and gunzip are distributed as a single program. zip and unzip
|
||||
are, for historical reasons, two separate programs, although the
|
||||
authors of these two programs work closely together in the info-zip
|
||||
team. zip and unzip are not associated with the GNU project.
|
||||
The sources are available by ftp in
|
||||
|
||||
oak.oakland.edu:/pub/misc/unix/zip19p1.zip
|
||||
oak.oakland.edu:/pub/misc/unix/unz50p1.tar-z
|
||||
46
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/README.DOS
Normal file
46
ASSEMBLY & COMPILE TOOLS/PLM-2-C/PLMZIP/README.DOS
Normal file
@@ -0,0 +1,46 @@
|
||||
Please read the generic README file first. Note in particular:
|
||||
|
||||
copy gzip.exe to gunzip.exe and zcat.exe, or use "gzip -d" to decompress.
|
||||
gzip386.exe runs much faster but only on 386 and above; it is compiled with
|
||||
djgpp 1.10 available in directory omnigate.clarkson.edu:/pub/msdos/djgpp.
|
||||
|
||||
Read also gzip.doc, and in particular the description of the -N option
|
||||
which is very useful for MSDOS to restore the original file names that
|
||||
have been truncated. You can set it by default by adding
|
||||
set GZIP=-N
|
||||
in your autoexec.bat file.
|
||||
|
||||
gzip386.exe includes the djgpp DOS extender (go32.exe) taken from
|
||||
djdev110.zip. If you already have djgpp 1.10 or later, you can remove
|
||||
go32.exe to get a smaller executable using:
|
||||
exe2aout gzip386.exe
|
||||
aout2exe gzip386
|
||||
del gzip386
|
||||
|
||||
If you get the error message "DMPI: Not enough memory", you are using a
|
||||
memory manager which allocates physical memory immediately instead of
|
||||
allocating on demand when pages are used for the firt time. This problem
|
||||
occurs only when using DMPI. (Try under plain DOS without loading any memory
|
||||
manager in config.sys.) This problem will be fixed in future versions of
|
||||
djgpp using the COFF object format instead of a.out. (In the a.out format,
|
||||
the data segment is loaded at virtual address 0x400000 and the memory manager
|
||||
thinks that gzip requires more than 4 megs of memory.)
|
||||
|
||||
With gzip386.exe, you may have to set the TZ environment variable to
|
||||
get correct timestamps in the compressed files. For example in France
|
||||
I must set:
|
||||
set TZ=MET-1
|
||||
The 16 bit version always uses local time.
|
||||
|
||||
For other problems related to DJGPP, read the documentation provided
|
||||
in djdev110.zip. If a problem occurs with gzip386.exe, check first
|
||||
if it occurs also with gzip.exe before reporting it.
|
||||
|
||||
The two programs gzip.exe and gzip386.exe give different compression ratios
|
||||
because the 16 bit version (gzip.exe) is compiled with -DSMALL_MEM to
|
||||
reduce memory usage. When compiled without this flag, all versions of
|
||||
gzip give exactly the same compression ratio. The 386 version runs faster
|
||||
under plain DOS without any memory manager than when using DMPI.
|
||||
|
||||
Please send comments and bug reports to Jean-loup Gailly <jloup@chorus.fr>
|
||||
or to bug-gnu-utils@prep.ai.mit.edu.
|
||||
144
ASSEMBLY & COMPILE TOOLS/PLM-2-C/README
Normal file
144
ASSEMBLY & COMPILE TOOLS/PLM-2-C/README
Normal file
@@ -0,0 +1,144 @@
|
||||
This is the file README for the gzip distribution, version 1.2.4.
|
||||
|
||||
gzip (GNU zip) is a compression utility designed to be a replacement
|
||||
for 'compress'. Its main advantages over compress are much better
|
||||
compression and freedom from patented algorithms. The GNU Project
|
||||
uses it as the standard compression program for its system.
|
||||
|
||||
gzip currently uses by default the LZ77 algorithm used in zip 1.9 (the
|
||||
portable pkzip compatible archiver). The gzip format was however
|
||||
designed to accommodate several compression algorithms. See below
|
||||
for a comparison of zip and gzip.
|
||||
|
||||
gunzip can currently decompress files created by gzip, compress or
|
||||
pack. The detection of the input format is automatic. For the
|
||||
gzip format, gunzip checks a 32 bit CRC. For pack, gunzip checks the
|
||||
uncompressed length. The 'compress' format was not designed to allow
|
||||
consistency checks. However gunzip is sometimes able to detect a bad
|
||||
.Z file because there is some redundancy in the .Z compression format.
|
||||
If you get an error when uncompressing a .Z file, do not assume that
|
||||
the .Z file is correct simply because the standard uncompress does not
|
||||
complain. This generally means that the standard uncompress does not
|
||||
check its input, and happily generates garbage output.
|
||||
|
||||
gzip produces files with a .gz extension. Previous versions of gzip
|
||||
used the .z extension, which was already used by the 'pack'
|
||||
Huffman encoder. gunzip is able to decompress .z files (packed
|
||||
or gzip'ed).
|
||||
|
||||
Several planned features are not yet supported (see the file TODO).
|
||||
See the file NEWS for a summary of changes since 0.5. See the file
|
||||
INSTALL for installation instructions. Some answers to frequently
|
||||
asked questions are given in the file INSTALL, please read it. (In
|
||||
particular, please don't ask me once more for an /etc/magic entry.)
|
||||
|
||||
WARNING: on several systems, compiler bugs cause gzip to fail, in
|
||||
particular when optimization options are on. See the section "Special
|
||||
targets" at the end of the INSTALL file for a list of known problems.
|
||||
For all machines, use "make check" to check that gzip was compiled
|
||||
correctly. Try compiling gzip without any optimization if you have a
|
||||
problem.
|
||||
|
||||
Please send all comments and bug reports by electronic mail to:
|
||||
Jean-loup Gailly <jloup@chorus.fr>
|
||||
|
||||
or, if this fails, to bug-gnu-utils@prep.ai.mit.edu.
|
||||
Bug reports should ideally include:
|
||||
|
||||
* The complete output of "gzip -V" (or the contents of revision.h
|
||||
if you can't get gzip to compile)
|
||||
* The hardware and operating system (try "uname -a")
|
||||
* The compiler used to compile (if it is gcc, use "gcc -v")
|
||||
* A description of the bug behavior
|
||||
* The input to gzip, that triggered the bug
|
||||
|
||||
If you send me patches for machines I don't have access to, please test them
|
||||
very carefully. gzip is used for backups, it must be extremely reliable.
|
||||
|
||||
The package crypt++.el is highly recommended to manipulate gzip'ed
|
||||
file from emacs. It recognizes automatically encrypted and compressed
|
||||
files when they are first visited or written. It is available via
|
||||
anonymous ftp to roebling.poly.edu [128.238.5.31] in /pub/crypt++.el.
|
||||
The same directory contains also patches to dired, ange-ftp and info.
|
||||
GNU tar 1.11.2 has a -z option to invoke directly gzip, so you don't have to
|
||||
patch it. The package ftp.uu.net:/languages/emacs-lisp/misc/jka-compr19.el.Z
|
||||
also supports gzip'ed files.
|
||||
|
||||
The znew and gzexe shell scripts provided with gzip benefit from
|
||||
(but do not require) the cpmod utility to transfer file attributes.
|
||||
It is available by anonymous ftp on gatekeeper.dec.com in
|
||||
/.0/usenet/comp.sources.unix/volume11/cpmod.Z.
|
||||
|
||||
The sample programs zread.c, sub.c and add.c in subdirectory sample
|
||||
are provided as examples of useful complements to gzip. Read the
|
||||
comments inside each source file. The perl script ztouch is also
|
||||
provided as example (not installed by default since it relies on perl).
|
||||
|
||||
|
||||
gzip is free software, you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License, a copy of which is
|
||||
provided under the name COPYING. The latest version of gzip are always
|
||||
available by ftp in prep.ai.mit.edu:/pub/gnu, or in any of the prep
|
||||
mirror sites:
|
||||
|
||||
- sources in gzip-*.tar (or .shar or .tar.gz).
|
||||
- Solaris 2 executables in sparc-sun-solaris2/gzip-binaries-*.tar
|
||||
- MSDOS lha self-extracting exe in gzip-msdos-*.exe. Once extracted,
|
||||
copy gzip.exe to gunzip.exe and zcat.exe, or use "gzip -d" to decompress.
|
||||
gzip386.exe runs much faster but only on 386 and above; it is compiled with
|
||||
djgpp 1.10 available in directory omnigate.clarkson.edu:/pub/msdos/djgpp.
|
||||
|
||||
A VMS executable is available in ftp.spc.edu:[.macro32.savesets]gzip-1-*.zip
|
||||
(use [.macro32]unzip.exe to extract). A PRIMOS executable is available
|
||||
in ftp.lysator.liu.se:/pub/primos/run/gzip.run.
|
||||
OS/2 executables (16 and 32 bits versions) are available in
|
||||
ftp.tu-muenchen.de:/pub/comp/os/os2/archiver/gz*-[16,32].zip
|
||||
|
||||
Some ftp servers can automatically make a tar.Z from a tar file. If
|
||||
you are getting gzip for the first time, you can ask for a tar.Z file
|
||||
instead of the much larger tar file.
|
||||
|
||||
Many thanks to those who provided me with bug reports and feedback.
|
||||
See the files THANKS and ChangeLog for more details.
|
||||
|
||||
|
||||
Note about zip vs. gzip:
|
||||
|
||||
The name 'gzip' was a very unfortunate choice, because zip and gzip
|
||||
are two really different programs, although the actual compression and
|
||||
decompression sources were written by the same persons. A different
|
||||
name should have been used for gzip, but it is too late to change now.
|
||||
|
||||
zip is an archiver: it compresses several files into a single archive
|
||||
file. gzip is a simple compressor: each file is compressed separately.
|
||||
Both share the same compression and decompression code for the
|
||||
'deflate' method. unzip can also decompress old zip archives
|
||||
(implode, shrink and reduce methods). gunzip can also decompress files
|
||||
created by compress and pack. zip 1.9 and gzip do not support
|
||||
compression methods other than deflation. (zip 1.0 supports shrink and
|
||||
implode). Better compression methods may be added in future versions
|
||||
of gzip. zip will always stick to absolute compatibility with pkzip,
|
||||
it is thus constrained by PKWare, which is a commercial company. The
|
||||
gzip header format is deliberately different from that of pkzip to
|
||||
avoid such a constraint.
|
||||
|
||||
On Unix, gzip is mostly useful in combination with tar. GNU tar
|
||||
1.11.2 has a -z option to invoke gzip automatically. "tar -z"
|
||||
compresses better than zip, since gzip can then take advantage of
|
||||
redundancy between distinct files. The drawback is that you must
|
||||
scan the whole tar.gz file in order to extract a single file near
|
||||
the end; unzip can directly seek to the end of the zip file. There
|
||||
is no overhead when you extract the whole archive anyway.
|
||||
If a member of a .zip archive is damaged, other files can still
|
||||
be recovered. If a .tar.gz file is damaged, files beyond the failure
|
||||
point cannot be recovered. (Future versions of gzip will have
|
||||
error recovery features.)
|
||||
|
||||
gzip and gunzip are distributed as a single program. zip and unzip
|
||||
are, for historical reasons, two separate programs, although the
|
||||
authors of these two programs work closely together in the info-zip
|
||||
team. zip and unzip are not associated with the GNU project.
|
||||
The sources are available by ftp in
|
||||
|
||||
oak.oakland.edu:/pub/misc/unix/zip19p1.zip
|
||||
oak.oakland.edu:/pub/misc/unix/unz50p1.tar-z
|
||||
46
ASSEMBLY & COMPILE TOOLS/PLM-2-C/README.DOS
Normal file
46
ASSEMBLY & COMPILE TOOLS/PLM-2-C/README.DOS
Normal file
@@ -0,0 +1,46 @@
|
||||
Please read the generic README file first. Note in particular:
|
||||
|
||||
copy gzip.exe to gunzip.exe and zcat.exe, or use "gzip -d" to decompress.
|
||||
gzip386.exe runs much faster but only on 386 and above; it is compiled with
|
||||
djgpp 1.10 available in directory omnigate.clarkson.edu:/pub/msdos/djgpp.
|
||||
|
||||
Read also gzip.doc, and in particular the description of the -N option
|
||||
which is very useful for MSDOS to restore the original file names that
|
||||
have been truncated. You can set it by default by adding
|
||||
set GZIP=-N
|
||||
in your autoexec.bat file.
|
||||
|
||||
gzip386.exe includes the djgpp DOS extender (go32.exe) taken from
|
||||
djdev110.zip. If you already have djgpp 1.10 or later, you can remove
|
||||
go32.exe to get a smaller executable using:
|
||||
exe2aout gzip386.exe
|
||||
aout2exe gzip386
|
||||
del gzip386
|
||||
|
||||
If you get the error message "DMPI: Not enough memory", you are using a
|
||||
memory manager which allocates physical memory immediately instead of
|
||||
allocating on demand when pages are used for the firt time. This problem
|
||||
occurs only when using DMPI. (Try under plain DOS without loading any memory
|
||||
manager in config.sys.) This problem will be fixed in future versions of
|
||||
djgpp using the COFF object format instead of a.out. (In the a.out format,
|
||||
the data segment is loaded at virtual address 0x400000 and the memory manager
|
||||
thinks that gzip requires more than 4 megs of memory.)
|
||||
|
||||
With gzip386.exe, you may have to set the TZ environment variable to
|
||||
get correct timestamps in the compressed files. For example in France
|
||||
I must set:
|
||||
set TZ=MET-1
|
||||
The 16 bit version always uses local time.
|
||||
|
||||
For other problems related to DJGPP, read the documentation provided
|
||||
in djdev110.zip. If a problem occurs with gzip386.exe, check first
|
||||
if it occurs also with gzip.exe before reporting it.
|
||||
|
||||
The two programs gzip.exe and gzip386.exe give different compression ratios
|
||||
because the 16 bit version (gzip.exe) is compiled with -DSMALL_MEM to
|
||||
reduce memory usage. When compiled without this flag, all versions of
|
||||
gzip give exactly the same compression ratio. The 386 version runs faster
|
||||
under plain DOS without any memory manager than when using DMPI.
|
||||
|
||||
Please send comments and bug reports to Jean-loup Gailly <jloup@chorus.fr>
|
||||
or to bug-gnu-utils@prep.ai.mit.edu.
|
||||
199
ASSEMBLY & COMPILE TOOLS/PLM-2-C/README.MARKDOWN
Normal file
199
ASSEMBLY & COMPILE TOOLS/PLM-2-C/README.MARKDOWN
Normal file
@@ -0,0 +1,199 @@
|
||||
> Here is the source for a PLM to C translator. I believe it is written in C, and was targeted for unix type systems. It may be able to compile with Turbo C, but will need some work. There is a lot of text in with the source code that is not surrounded with "/* */" C comment delimiters. If someone gets it to compile, please send it back to me so I can post the fixed version. This package is GNU, so enjoy.
|
||||
|
||||
\README
|
||||
|
||||
This is the file README for the gzip distribution, version 1.2.4.
|
||||
|
||||
gzip (GNU zip) is a compression utility designed to be a replacement
|
||||
for 'compress'. Its main advantages over compress are much better
|
||||
compression and freedom from patented algorithms. The GNU Project
|
||||
uses it as the standard compression program for its system.
|
||||
|
||||
gzip currently uses by default the LZ77 algorithm used in zip 1.9 (the
|
||||
portable pkzip compatible archiver). The gzip format was however
|
||||
designed to accommodate several compression algorithms. See below
|
||||
for a comparison of zip and gzip.
|
||||
|
||||
gunzip can currently decompress files created by gzip, compress or
|
||||
pack. The detection of the input format is automatic. For the
|
||||
gzip format, gunzip checks a 32 bit CRC. For pack, gunzip checks the
|
||||
uncompressed length. The 'compress' format was not designed to allow
|
||||
consistency checks. However gunzip is sometimes able to detect a bad
|
||||
.Z file because there is some redundancy in the .Z compression format.
|
||||
If you get an error when uncompressing a .Z file, do not assume that
|
||||
the .Z file is correct simply because the standard uncompress does not
|
||||
complain. This generally means that the standard uncompress does not
|
||||
check its input, and happily generates garbage output.
|
||||
|
||||
gzip produces files with a .gz extension. Previous versions of gzip
|
||||
used the .z extension, which was already used by the 'pack'
|
||||
Huffman encoder. gunzip is able to decompress .z files (packed
|
||||
or gzip'ed).
|
||||
|
||||
Several planned features are not yet supported (see the file TODO).
|
||||
See the file NEWS for a summary of changes since 0.5. See the file
|
||||
INSTALL for installation instructions. Some answers to frequently
|
||||
asked questions are given in the file INSTALL, please read it. (In
|
||||
particular, please don't ask me once more for an /etc/magic entry.)
|
||||
|
||||
WARNING: on several systems, compiler bugs cause gzip to fail, in
|
||||
particular when optimization options are on. See the section "Special
|
||||
targets" at the end of the INSTALL file for a list of known problems.
|
||||
For all machines, use "make check" to check that gzip was compiled
|
||||
correctly. Try compiling gzip without any optimization if you have a
|
||||
problem.
|
||||
|
||||
Please send all comments and bug reports by electronic mail to:
|
||||
Jean-loup Gailly <jloup@chorus.fr>
|
||||
|
||||
or, if this fails, to bug-gnu-utils@prep.ai.mit.edu.
|
||||
Bug reports should ideally include:
|
||||
|
||||
* The complete output of "gzip -V" (or the contents of revision.h
|
||||
if you can't get gzip to compile)
|
||||
* The hardware and operating system (try "uname -a")
|
||||
* The compiler used to compile (if it is gcc, use "gcc -v")
|
||||
* A description of the bug behavior
|
||||
* The input to gzip, that triggered the bug
|
||||
|
||||
If you send me patches for machines I don't have access to, please test them
|
||||
very carefully. gzip is used for backups, it must be extremely reliable.
|
||||
|
||||
The package crypt++.el is highly recommended to manipulate gzip'ed
|
||||
file from emacs. It recognizes automatically encrypted and compressed
|
||||
files when they are first visited or written. It is available via
|
||||
anonymous ftp to roebling.poly.edu [128.238.5.31] in /pub/crypt++.el.
|
||||
The same directory contains also patches to dired, ange-ftp and info.
|
||||
GNU tar 1.11.2 has a -z option to invoke directly gzip, so you don't have to
|
||||
patch it. The package ftp.uu.net:/languages/emacs-lisp/misc/jka-compr19.el.Z
|
||||
also supports gzip'ed files.
|
||||
|
||||
The znew and gzexe shell scripts provided with gzip benefit from
|
||||
(but do not require) the cpmod utility to transfer file attributes.
|
||||
It is available by anonymous ftp on gatekeeper.dec.com in
|
||||
/.0/usenet/comp.sources.unix/volume11/cpmod.Z.
|
||||
|
||||
The sample programs zread.c, sub.c and add.c in subdirectory sample
|
||||
are provided as examples of useful complements to gzip. Read the
|
||||
comments inside each source file. The perl script ztouch is also
|
||||
provided as example (not installed by default since it relies on perl).
|
||||
|
||||
|
||||
gzip is free software, you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License, a copy of which is
|
||||
provided under the name COPYING. The latest version of gzip are always
|
||||
available by ftp in prep.ai.mit.edu:/pub/gnu, or in any of the prep
|
||||
mirror sites:
|
||||
|
||||
- sources in gzip-*.tar (or .shar or .tar.gz).
|
||||
- Solaris 2 executables in sparc-sun-solaris2/gzip-binaries-*.tar
|
||||
- MSDOS lha self-extracting exe in gzip-msdos-*.exe. Once extracted,
|
||||
copy gzip.exe to gunzip.exe and zcat.exe, or use "gzip -d" to decompress.
|
||||
gzip386.exe runs much faster but only on 386 and above; it is compiled with
|
||||
djgpp 1.10 available in directory omnigate.clarkson.edu:/pub/msdos/djgpp.
|
||||
|
||||
A VMS executable is available in ftp.spc.edu:[.macro32.savesets]gzip-1-*.zip
|
||||
(use [.macro32]unzip.exe to extract). A PRIMOS executable is available
|
||||
in ftp.lysator.liu.se:/pub/primos/run/gzip.run.
|
||||
OS/2 executables (16 and 32 bits versions) are available in
|
||||
ftp.tu-muenchen.de:/pub/comp/os/os2/archiver/gz*-[16,32].zip
|
||||
|
||||
Some ftp servers can automatically make a tar.Z from a tar file. If
|
||||
you are getting gzip for the first time, you can ask for a tar.Z file
|
||||
instead of the much larger tar file.
|
||||
|
||||
Many thanks to those who provided me with bug reports and feedback.
|
||||
See the files THANKS and ChangeLog for more details.
|
||||
|
||||
|
||||
Note about zip vs. gzip:
|
||||
|
||||
The name 'gzip' was a very unfortunate choice, because zip and gzip
|
||||
are two really different programs, although the actual compression and
|
||||
decompression sources were written by the same persons. A different
|
||||
name should have been used for gzip, but it is too late to change now.
|
||||
|
||||
zip is an archiver: it compresses several files into a single archive
|
||||
file. gzip is a simple compressor: each file is compressed separately.
|
||||
Both share the same compression and decompression code for the
|
||||
'deflate' method. unzip can also decompress old zip archives
|
||||
(implode, shrink and reduce methods). gunzip can also decompress files
|
||||
created by compress and pack. zip 1.9 and gzip do not support
|
||||
compression methods other than deflation. (zip 1.0 supports shrink and
|
||||
implode). Better compression methods may be added in future versions
|
||||
of gzip. zip will always stick to absolute compatibility with pkzip,
|
||||
it is thus constrained by PKWare, which is a commercial company. The
|
||||
gzip header format is deliberately different from that of pkzip to
|
||||
avoid such a constraint.
|
||||
|
||||
On Unix, gzip is mostly useful in combination with tar. GNU tar
|
||||
1.11.2 has a -z option to invoke gzip automatically. "tar -z"
|
||||
compresses better than zip, since gzip can then take advantage of
|
||||
redundancy between distinct files. The drawback is that you must
|
||||
scan the whole tar.gz file in order to extract a single file near
|
||||
the end; unzip can directly seek to the end of the zip file. There
|
||||
is no overhead when you extract the whole archive anyway.
|
||||
If a member of a .zip archive is damaged, other files can still
|
||||
be recovered. If a .tar.gz file is damaged, files beyond the failure
|
||||
point cannot be recovered. (Future versions of gzip will have
|
||||
error recovery features.)
|
||||
|
||||
gzip and gunzip are distributed as a single program. zip and unzip
|
||||
are, for historical reasons, two separate programs, although the
|
||||
authors of these two programs work closely together in the info-zip
|
||||
team. zip and unzip are not associated with the GNU project.
|
||||
The sources are available by ftp in
|
||||
|
||||
oak.oakland.edu:/pub/misc/unix/zip19p1.zip
|
||||
oak.oakland.edu:/pub/misc/unix/unz50p1.tar-z
|
||||
|
||||
|
||||
|
||||
\README.DOS
|
||||
|
||||
Please read the generic README file first. Note in particular:
|
||||
|
||||
copy gzip.exe to gunzip.exe and zcat.exe, or use "gzip -d" to decompress.
|
||||
gzip386.exe runs much faster but only on 386 and above; it is compiled with
|
||||
djgpp 1.10 available in directory omnigate.clarkson.edu:/pub/msdos/djgpp.
|
||||
|
||||
Read also gzip.doc, and in particular the description of the -N option
|
||||
which is very useful for MSDOS to restore the original file names that
|
||||
have been truncated. You can set it by default by adding
|
||||
set GZIP=-N
|
||||
in your autoexec.bat file.
|
||||
|
||||
gzip386.exe includes the djgpp DOS extender (go32.exe) taken from
|
||||
djdev110.zip. If you already have djgpp 1.10 or later, you can remove
|
||||
go32.exe to get a smaller executable using:
|
||||
exe2aout gzip386.exe
|
||||
aout2exe gzip386
|
||||
del gzip386
|
||||
|
||||
If you get the error message "DMPI: Not enough memory", you are using a
|
||||
memory manager which allocates physical memory immediately instead of
|
||||
allocating on demand when pages are used for the firt time. This problem
|
||||
occurs only when using DMPI. (Try under plain DOS without loading any memory
|
||||
manager in config.sys.) This problem will be fixed in future versions of
|
||||
djgpp using the COFF object format instead of a.out. (In the a.out format,
|
||||
the data segment is loaded at virtual address 0x400000 and the memory manager
|
||||
thinks that gzip requires more than 4 megs of memory.)
|
||||
|
||||
With gzip386.exe, you may have to set the TZ environment variable to
|
||||
get correct timestamps in the compressed files. For example in France
|
||||
I must set:
|
||||
set TZ=MET-1
|
||||
The 16 bit version always uses local time.
|
||||
|
||||
For other problems related to DJGPP, read the documentation provided
|
||||
in djdev110.zip. If a problem occurs with gzip386.exe, check first
|
||||
if it occurs also with gzip.exe before reporting it.
|
||||
|
||||
The two programs gzip.exe and gzip386.exe give different compression ratios
|
||||
because the 16 bit version (gzip.exe) is compiled with -DSMALL_MEM to
|
||||
reduce memory usage. When compiled without this flag, all versions of
|
||||
gzip give exactly the same compression ratio. The 386 version runs faster
|
||||
under plain DOS without any memory manager than when using DMPI.
|
||||
|
||||
Please send comments and bug reports to Jean-loup Gailly <jloup@chorus.fr>
|
||||
or to bug-gnu-utils@prep.ai.mit.edu.
|
||||
Reference in New Issue
Block a user