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Adding upstream version 1.5~rc2.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
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Daniel Baumann 2025-02-17 22:14:05 +01:00
parent df42bf1fa4
commit 25083e3fd1
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
14 changed files with 215 additions and 255 deletions
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README
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@ -12,7 +12,12 @@ little memory as 50 kB, irrespective of the dictionary size used to
compress the file. Of course, the smaller the output buffer size used in
relation to the dictionary size, the more accesses to disk are needed
and the slower the decompression is. This "low memory" mode only works
when decompressing to a regular file.
when decompressing to a regular file and is intended for systems without
enough memory (RAM + swap) to keep the whole dictionary at once.
The amount of memory required by lunzip to decompress a file is about
46 kB larger than the dictionary size used to compress that file, unless
the "--buffer-size" option is specified.
The lzip file format is designed for long-term data archiving. It is
clean, provides very safe 4 factor integrity checking, and is backed by
@ -23,12 +28,6 @@ bzip2, which makes it safer than decompressors returning ambiguous
warning values (like gunzip) when it is used as a back end for tar or
zutils.
Lunzip replaces every file given in the command line with a decompressed
version of itself. Each decompressed file has the same modification
date, permissions, and, when possible, ownership as the corresponding
compressed file. Lunzip is able to read from some types of non regular
files if the "--stdout" option is specified.
Lunzip attempts to guess the name for the decompressed file from that of
the compressed file as follows:
@ -36,6 +35,15 @@ filename.lz becomes filename
filename.tlz becomes filename.tar
anyothername becomes anyothername.out
Decompressing a file is much like copying or moving it; therefore lunzip
preserves the access and modification dates, permissions, and, when
possible, ownership of the file just as "cp -p" does. (If the user ID or
the group ID can't be duplicated, the file permission bits S_ISUID and
S_ISGID are cleared).
Lunzip is able to read from some types of non regular files if the
"--stdout" option is specified.
If no file names are specified, lunzip decompresses from standard input
to standard output. In this case, lunzip will decline to read compressed
input from a terminal.
@ -45,10 +53,6 @@ two or more compressed files. The result is the concatenation of the
corresponding uncompressed files. Integrity testing of concatenated
compressed files is also supported.
The amount of memory required by lunzip to decompress a file is about
46 kB larger than the dictionary size used to compress that file, unless
the "--buffer-size" option is specified.
The ideas embodied in lunzip are due to (at least) the following people:
Abraham Lempel and Jacob Ziv (for the LZ algorithm), Andrey Markov (for
the definition of Markov chains), G.N.N. Martin (for the definition of
@ -56,7 +60,7 @@ range encoding), Igor Pavlov (for putting all the above together in
LZMA), and Julian Seward (for bzip2's CLI).
Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
Copyright (C) 2010, 2011, 2012, 2013, 2014 Antonio Diaz Diaz.
This file is free documentation: you have unlimited permission to copy,
distribute and modify it.