LZIP(1) User Commands LZIP(1)
NAME
lzip - reduces the size of files
SYNOPSIS
lzip [options] [files]
DESCRIPTION
Lzip is a lossless data compressor with a user interface similar to the
one of gzip or bzip2. Lzip uses a simplified form of the 'Lem-
pel-Ziv-Markov chain-Algorithm' (LZMA) stream format and provides a 3
factor integrity checking to maximize interoperability and optimize
safety. Lzip can compress about as fast as gzip (lzip -0) or compress
most files more than bzip2 (lzip -9). Decompression speed is intermedi-
ate between gzip and bzip2. Lzip is better than gzip and bzip2 from a
data recovery perspective. Lzip has been designed, written, and tested
with great care to replace gzip and bzip2 as the standard general-pur-
pose compressed format for unix-like systems.
OPTIONS
-h, --help
display this help and exit
-V, --version
output version information and exit
-a, --trailing-error
exit with error status if trailing data
-b, --member-size=<bytes>
set member size limit in bytes
-c, --stdout
write to standard output, keep input files
-d, --decompress
decompress
-f, --force
overwrite existing output files
-F, --recompress
force re-compression of compressed files
-k, --keep
keep (don't delete) input files
-l, --list
print (un)compressed file sizes
-m, --match-length=<bytes>
set match length limit in bytes [36]
-o, --output=<file>
write to <file>, keep input files
-q, --quiet
suppress all messages
-s, --dictionary-size=<bytes>
set dictionary size limit in bytes [8 MiB]
-S, --volume-size=<bytes>
set volume size limit in bytes
-t, --test
test compressed file integrity
-v, --verbose
be verbose (a 2nd -v gives more)
-0 .. -9
set compression level [default 6]
--fast alias for -0
--best alias for -9
--loose-trailing
allow trailing data seeming corrupt header
If no file names are given, or if a file is '-', lzip compresses or de-
compresses from standard input to standard output. Numbers may be fol-
lowed by a multiplier: k = kB = 10^3 = 1000, Ki = KiB = 2^10 = 1024, M
= 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc... Dictionary sizes 12 to
29 are interpreted as powers of two, meaning 2^12 to 2^29 bytes.
The bidimensional parameter space of LZMA can't be mapped to a linear
scale optimal for all files. If your files are large, very repetitive,
etc, you may need to use the options --dictionary-size and
--match-length directly to achieve optimal performance.
To extract all the files from archive 'foo.tar.lz', use the commands
'tar -xf foo.tar.lz' or 'lzip -cd foo.tar.lz | tar -xf -'.
Exit status: 0 for a normal exit, 1 for environmental problems (file
not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
invalid input file, 3 for an internal consistency error (e.g., bug)
which caused lzip to panic.
The ideas embodied in lzip 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
range encoding), Igor Pavlov (for putting all the above together in
LZMA), and Julian Seward (for bzip2's CLI).
REPORTING BUGS
Report bugs to lzip-bug@nongnu.org
Lzip home page: http://www.nongnu.org/lzip/lzip.html
COPYRIGHT
Copyright © 2022 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2
or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for lzip is maintained as a Texinfo manual. If
the info and lzip programs are properly installed at your site, the
command
info lzip
should give you access to the complete manual.
lzip 1.23 January 2022 LZIP(1)
Generated by dwww version 1.15 on Thu Jun 20 13:26:03 CEST 2024.