Browse wiki
| Computer languages
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Perl +
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| Documentation note
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Documentation for GNU Parallel is availabl … Documentation for GNU Parallel is available online at [http://www.gnu.org/software/parallel/man.html gnu.org/s/parallel/man] . Screencasts videos can be found at [http://commons.wikimedia.org/wiki/GNU_parallel http://commons.wikimedia.org/wiki/GNU_parallel]./commons.wikimedia.org/wiki/GNU_parallel].
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| Featured category
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GNU Spotlight +
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| Featured date
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31 December 2011 +
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| Featured source
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The Free Software Supporter +
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| Full description
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GNU Parallel is a shell tool for executing … GNU Parallel is a shell tool for executing jobs in parallel using one
or more computers. A job is can be a single command or a small script
that has to be run for each of the lines in the input. The typical
input is a list of files, a list of hosts, a list of users, a list of
URLs, or a list of tables. A job can also be a command that reads from
a pipe. GNU Parallel can then split the input and pipe it into
commands in parallel.
If you use xargs and tee today you will find GNU Parallel very easy to
use as GNU Parallel is written to have the same options as xargs. If
you write loops in shell, you will find GNU Parallel may be able to
replace most of the loops and make them run faster by running several
jobs in parallel. GNU Parallel can even replace nested loops.
GNU Parallel makes sure output from the commands is the same output as
you would get had you run the commands sequentially. This makes it
possible to use output from GNU Parallel as input for other programs.
For each line of input, GNU Parallel will execute command with the line as arguments. If no command is given, the line of input is executed. Several lines will be run in parallel. GNU Parallel can often be used as a substitute for xargs or cat
[[File:Pipe.png]]bash.
The GNU Parallel distribution also includes an 'sql' script which aims to give a simple, unified interface for accessing databases through all the different databases' command line clients, and a 'niceload' script to slow down or suspend a program if system activity is above a given threshold.ystem activity is above a given threshold.
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| GNU package identifier
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parallel +
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| Homepage URL
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http://www.gnu.org/software/parallel/ +
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| Interface
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command-line +
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| Is GNU
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true +
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| Keywords
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Perl +
, argument +
, parallel +
, parallel processing +
, execution +
, cat +
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| Last review by
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Andrew Engelbrecht +
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| Last review date
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5 January 2012 +
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| License
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GPLv3orlater +
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| License verified by
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Kelly Hopkins +
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| License verified date
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24 September 2010 +
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| Name
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GNU Parallel +
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| Real name
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Ole Tange +
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| Related projects
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GNU SQL +
, Coreutils +
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| Resource URL
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http://ftp.gnu.org/gnu/parallel/ +
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| Resource audience
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General +
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| Resource kind
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Download +
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| Revisionid
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13,640 +
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| Revisiontimestamp
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5 January 2012 18:07:46 +
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| Revisionuser
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User:Sudoman +
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| Role
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Maintainer +
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| Short description
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a shell tool for executing jobs in parallel using one or more computers +
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| Use
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system-administration +
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| User level
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intermediate +
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| Version date
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22 December 2011 +
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| Version download
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http://ftp.gnu.org/gnu/parallel/parallel-20111222.tar.bz2 +
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| Version identifier
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20111222 +
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| Version status
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stable +
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| Has queryThis property is a special property in this wiki.
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Parallel +
, Parallel +
, Parallel +
, Parallel +
, Parallel +
, Parallel +
, Parallel +
, Parallel +
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| Has improper value forThis property is a special property in this wiki.
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Submitted by +
, Submitted date +
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| Modification dateThis property is a special property in this wiki.
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5 March 2013 21:04:53 +
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| Page has default formThis property is a special property in this wiki.
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Entry +
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| Has subobjectThis property is a special property in this wiki.
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Parallel +
, Parallel +
, Parallel +
, Parallel +
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| EmailThis property is a special property in this wiki.
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ole@tange.dk +
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Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
copy of the license is included in the page “GNU Free
Documentation License”.
The copyright and license notices on this page only apply to the
text on this page. Any software described in this text has its
own copyright notice and license, which can usually be found in
the distribution itself.