LZIP(1) lzip 1.24.1 LZIP(1)
User Commands User Commands
March 2024
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
'Lempel-Ziv-Markov chain-Algorithm' (LZMA) stream format to maximize
interoperability. The maximum dictionary size is 512 MiB so that any
lzip file can be decompressed on 32-bit machines. Lzip provides
accurate and robust 3-factor integrity checking. Lzip can compress
about as fast as gzip (lzip -0) or compress most files more than bzip2
(lzip -9). Decompression speed is intermediate 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-purpose 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, test compressed file integrity
-f, --force
overwrite existing output files
-F, --recompress
force re-compression of compressed files
-k, --keep
keep (don't delete) input files
-l, --list
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LZIP(1) lzip 1.24.1 LZIP(1)
User Commands User Commands
March 2024
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
--empty-error
exit with error status if empty member in file
--marking-error
exit with error status if 1st LZMA byte not 0
--loose-trailing
allow trailing data seeming corrupt header
If no file names are given, or if a file is '-', lzip compresses or
decompresses from standard input to standard output. Numbers may be
followed 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
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LZIP(1) lzip 1.24.1 LZIP(1)
User Commands User Commands
March 2024
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 command-line options, 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), Andrei 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 c 2024 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.
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