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PLZIP(1)			 User Commands			      PLZIP(1)

NAME
       plzip - reduces the size	of files

SYNOPSIS
       plzip [options] [files]

DESCRIPTION
       Plzip  is a massively parallel (multi-threaded) implementation of lzip,
       fully compatible	with lzip 1.4 or newer.	Plzip uses the lzlib  compres-
       sion library.

       Lzip is a lossless data compressor with a user interface	similar	to the
       one of gzip or bzip2. 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.

       Plzip  can  compress/decompress	large files on multiprocessor machines
       much faster than	lzip, at the cost of a	slightly  reduced  compression
       ratio  (0.4 to 2	percent	larger compressed files). Note that the	number
       of usable threads is limited by file size; on files larger than	a  few
       GB  plzip can use hundreds of processors, but on	files of only a	few MB
       plzip is	no faster than lzip.

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, --data-size=<bytes>
	      set size of input	data blocks [2x8=16 MiB]

       -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]

       -n, --threads=<n>
	      set number of (de)compression threads [2]

       -o, --output=<file>
	      if reading standard input, write to <file>

       -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

       --in-slots=<n>
	      number of	1 MiB input packets buffered [4]

       --out-slots=<n>
	      number of	1 MiB output packets buffered [64]

       If no file names	are given, or if a file	is '-',	 plzip	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 --dictionary-size and  --match-length  op-
       tions directly to achieve optimal performance.

       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 plzip to panic.

REPORTING BUGS
       Report bugs to lzip-bug@nongnu.org
       Plzip home page:	http://www.nongnu.org/lzip/plzip.html

COPYRIGHT
       Copyright (C) 2009 Laszlo Ersek.
       Copyright (C) 2019 Antonio Diaz Diaz.  Using lzlib 1.11 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 plzip	is maintained as a Texinfo manual.  If
       the  info  and  plzip programs are properly installed at	your site, the
       command

	      info plzip

       should give you access to the complete manual.

plzip 1.8			 January 2019			      PLZIP(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | REPORTING BUGS | COPYRIGHT | SEE ALSO

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