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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, chosen to maxi-
       mize safety and interoperability. Lzip can compress about  as  fast  as
       gzip (lzip -0) or compress most files more than bzip2 (lzip -9). Decom-
       pression 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 sys-
       tems.


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
       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
       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 (eg, 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  (C) 2021 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 1.22                        January 2021                          lzip(1)

lzip 1.22 - Generated Sat Jan 16 13:12:32 CST 2021
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