NAME

       pdlzip - reduces the size of files

SYNOPSIS

       pdlzip [options] [files]

DESCRIPTION

       Pdlzip  is  a  permissively  licensed  implementation of the lzip data compressor, intended for those who
       can't distribute (or even use) GPL licensed Free Software. The name of pdlzip comes from  'public  domain
       lzip'.  Pdlzip is written in C and is (hope)fully compatible with lzip 1.4 or newer.

       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.

       Pdlzip  is  also able to decompress legacy lzma-alone (.lzma) files.  Lzma-alone is a very bad format; it
       is essentially a raw LZMA stream.  If you keep any lzma-alone files, it is advisable to  recompress  them
       to lzip format. Lziprecover can convert some lzma-alone files to lzip format without recompressing.

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

       -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

       -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]

       -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 '-', pdlzip 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 27 are interpreted as powers of
       two, meaning 2^12 to 2^27 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. For example, -9m64 usually compresses executables
       more (and faster) than -9.

       To  extract all the files from archive 'foo.tar.lz', use the commands 'tar -xf foo.tar.lz' or 'pdlzip -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 pdlzip to panic.

       Pdlzip includes public domain compression/decompression code from the LZMA SDK (Software Development Kit)
       written by Igor Pavlov.

REPORTING BUGS

       Report bugs to lzip-bug@nongnu.org
       Pdlzip home page: http://www.nongnu.org/lzip/pdlzip.html

COPYRIGHT

       Copyright © 2022 Antonio Diaz Diaz.  Public Domain 2009 Igor Pavlov.  License 2-clause BSD.
       This  is  free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent
       permitted by law.