1LZIP(1) User Commands LZIP(1)
2
6 lzip - reduces the size of files
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9 lzip [options] [files]
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12 Lzip is a lossless data compressor with a user interface similar to the
13 one of gzip or bzip2. Lzip uses a simplified form of the 'Lem‐
14 pel-Ziv-Markov chain-Algorithm' (LZMA) stream format and provides a 3
15 factor integrity checking to maximize interoperability and optimize
16 safety. Lzip can compress about as fast as gzip (lzip -0) or compress
17 most files more than bzip2 (lzip -9). Decompression speed is intermedi‐
18 ate between gzip and bzip2. Lzip is better than gzip and bzip2 from a
19 data recovery perspective. Lzip has been designed, written, and tested
20 with great care to replace gzip and bzip2 as the standard general-pur‐
21 pose compressed format for unix-like systems.
22
24 -h, --help
25 display this help and exit
26 -V, --version
28 output version information and exit
29 -a, --trailing-error
31 exit with error status if trailing data
32 -b, --member-size=<bytes>
34 set member size limit in bytes
35 -c, --stdout
37 write to standard output, keep input files
38 -d, --decompress
40 decompress
41 -f, --force
43 overwrite existing output files
44 -F, --recompress
46 force re-compression of compressed files
47 -k, --keep
49 keep (don't delete) input files
50 -l, --list
52 print (un)compressed file sizes
53 -m, --match-length=<bytes>
55 set match length limit in bytes [36]
56 -o, --output=<file>
58 write to <file>, keep input files
59 -q, --quiet
61 suppress all messages
62 -s, --dictionary-size=<bytes>
64 set dictionary size limit in bytes [8 MiB]
65 -S, --volume-size=<bytes>
67 set volume size limit in bytes
68 -t, --test
70 test compressed file integrity
71 -v, --verbose
73 be verbose (a 2nd -v gives more)
74 -0 .. -9
76 set compression level [default 6]
77 --fast alias for -0
79 --best alias for -9
81 --loose-trailing
83 allow trailing data seeming corrupt header
84 If no file names are given, or if a file is '-', lzip compresses or de‐
86 compresses from standard input to standard output. Numbers may be fol‐
87 lowed by a multiplier: k = kB = 10^3 = 1000, Ki = KiB = 2^10 = 1024, M
88 = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc... Dictionary sizes 12 to
89 29 are interpreted as powers of two, meaning 2^12 to 2^29 bytes.
90 The bidimensional parameter space of LZMA can't be mapped to a linear
92 scale optimal for all files. If your files are large, very repetitive,
93 etc, you may need to use the options --dictionary-size and
94 --match-length directly to achieve optimal performance.
95 To extract all the files from archive 'foo.tar.lz', use the commands
97 'tar -xf foo.tar.lz' or 'lzip -cd foo.tar.lz | tar -xf -'.
98 Exit status: 0 for a normal exit, 1 for environmental problems (file
100 not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
101 invalid input file, 3 for an internal consistency error (e.g., bug)
102 which caused lzip to panic.
103 The ideas embodied in lzip are due to (at least) the following people:
105 Abraham Lempel and Jacob Ziv (for the LZ algorithm), Andrey Markov (for
106 the definition of Markov chains), G.N.N. Martin (for the definition of
107 range encoding), Igor Pavlov (for putting all the above together in
108 LZMA), and Julian Seward (for bzip2's CLI).
109
111 Report bugs to lzip-bug@nongnu.org
112 Lzip home page: http://www.nongnu.org/lzip/lzip.html
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115 Copyright © 2022 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2
116 or later <http://gnu.org/licenses/gpl.html>
117 This is free software: you are free to change and redistribute it.
118 There is NO WARRANTY, to the extent permitted by law.
119
121 The full documentation for lzip is maintained as a Texinfo manual. If
122 the info and lzip programs are properly installed at your site, the
123 command
124 info lzip
126 should give you access to the complete manual.
128lzip 1.23 January 2022 LZIP(1)