Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
PIXZ(1)								       PIXZ(1)

NAME
       pixz - parallel,	indexed	xz compressor

SYNOPSIS
       pixz [OPTIONS] [INPUT [OUTPUT]]

DESCRIPTION
       pixz compresses and decompresses	files using multiple processors. If
       the input looks like a tar(1) archive, it also creates an index of all
       the files in the	archive. This allows the extraction of only a small
       segment of the tarball, without needing to decompress the entire
       archive.

OPTIONS
       By default, pixz	uses standard input and	output,	unless INPUT and
       OUTPUT arguments	are provided. If pixz is provided with input but no
       output, it will delete the input	once it's done.

       -d
	   Decompress, instead of compress.

       -t
	   Force non-tarball mode. By default, pixz auto-detects tar data, and
	   if found enters tarball mode. When compressing in non-tarball mode,
	   no archive index will be created. When decompressing, fast
	   extraction will not be available.

       -l
	   List	the archive contents. In tarball mode, lists the files in the
	   tarball. In non-tarball mode, lists the blocks of compressed	data.

       -x PATH
	   Extract certain members from	an archive, quickly. All members whose
	   path	begins with PATH will be extracted.

       -i INPUT
	   Use INPUT as	the input.

       -o OUTPUT
	   Use OUTPUT as the output.

       -#
	   Set compression level, from -0 (lowest compression, fastest)	to -9
	   (highest compression, slowest).

       -e
	   Use "extreme" compression, which is much slower and only yields a
	   marginal decrease in	size.

       -p CPUS
	   Set the number of CPU cores to use. By default pixz will use	the
	   number of cores on the system.

       -f FRACTION
	   Set the size	of each	compression block, relative to the LZMA
	   dictionary size (default is 2.0). Higher values give	better
	   compression ratios, but use more memory and make random access less
	   efficient. Values less than 1.0 aren't very efficient.

       -q SIZE
	   Set the number of blocks to allocate	for the	compression queue
	   (default is 1.3 * cores + 2,	rounded	up). Higher values give	better
	   throughput, up to a point, but use more memory. Values less than
	   the number of cores will make some cores sit	idle.

       -h
	   Show	pixz's online help.

EXAMPLES
       pixz < myfile > myfile.xz
	   Compress a file with	pixz.

       pixz myfile
	   Compress to myfile.pxz, removing the	original.

       tar -Ipixz -cf output.tpxz directory
	   Make	tar use	pixz for compression.

       pixz -x path/to/file < input.tpxz | tar x
	   Extract one file from an archive, quickly.

AUTHOR
       pixz is written by Dave Vasilevsky.

RESOURCES
       The pixz	homepage: https://github.com/vasi/pixz/

       Source downloads: http://sourceforge.net/projects/pixz/files/

COPYRIGHT
       Copyright (C) 2009-2010 Dave Vasilevsky.	Use of this software is
       granted under the FreeBSD License.

SEE ALSO
       xz(1), tar(1)

				  06/06/2013			       PIXZ(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | AUTHOR | RESOURCES | COPYRIGHT | SEE ALSO

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=pixz&sektion=1&manpath=FreeBSD+12.0-RELEASE+and+Ports>

home | help