lzip - reduces the size of files



lzip − reduces the size of files


lzip [options] [files]


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 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 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.


−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


−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]


alias for −0


alias for −9


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 = 10ˆ3 = 1000, Ki = KiB = 2ˆ10 = 1024, M = 10ˆ6, Mi = 2ˆ20, G = 10ˆ9, Gi = 2ˆ30, etc... Dictionary sizes 12 to 29 are interpreted as powers of two, meaning 2ˆ12 to 2ˆ29 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).


Report bugs to lzip−[email protected]
Lzip home page: http://www.nongnu.org/lzip/lzip.html


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.


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.

Updated 2024-01-29 - jenkler.se | uex.se