This is the command pixz that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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.
Use pixz online using onworks.net services
