Difference between revisions of "Parallel"

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{{Entry
 
{{Entry
 
|Name=GNU Parallel
 
|Name=GNU Parallel
|Short description=a shell tool for executing jobs in parallel using one or more computers
+
|Short description=Build and execute command lines in parallel.
|Full description=GNU Parallel is a shell tool for executing jobs in parallel using one
+
|Full description='''Parallel''' is a shell tool for executing jobs in parallel using one or more computers.
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
+
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.
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
+
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.  
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{{Pipe}}bash.
 
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{{Pipe}}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.
 
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.
|Homepage URL=http://www.gnu.org/software/parallel/
+
|Homepage URL=https://www.gnu.org/software/parallel/
 +
|Version download=https://ftpmirror.gnu.org/parallel/parallel-20240522.tar.bz2
 
|Is GNU=Yes
 
|Is GNU=Yes
 
|GNU package identifier=parallel
 
|GNU package identifier=parallel
|User level=intermediate
 
|Computer languages=Perl
 
|Documentation note=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].
 
|Related projects=GNU SQL, Coreutils
 
|Keywords=Perl,argument,parallel,parallel processing,execution,cat
 
|Version identifier=20111222
 
|Version date=2011/12/22
 
|Version status=stable
 
|Version download=http://ftp.gnu.org/gnu/parallel/parallel-20111222.tar.bz2
 
|Last review by=Andrew Engelbrecht
 
|Last review date=2012/01/05
 
 
}}
 
}}
 
{{Project license
 
{{Project license
 
|License=GPLv3orlater
 
|License=GPLv3orlater
|License verified by=Kelly Hopkins
+
|License copyright=Copyright (C) 2007-2024 Ole Tange, http://ole.tange.dk and Free Software Foundation, Inc.
|License verified date=2010-09-24
+
|License verified by=Genium
 +
|License verified date=2024-05-05
 +
|License note=https://git.savannah.gnu.org/cgit/parallel.git/tree/LICENSES/GPL-3.0-or-later.txt
 +
}}
 +
{{Software category
 +
|Interface=command-line
 +
|Programming-language=perl
 +
|Runs-on=BSD, OS X, GNU/Linux
 +
|Use=system-administration
 +
}}
 +
{{EntryGNU
 +
|Is GNU=Yes
 +
|GNU package identifier=parallel
 +
}}
 +
{{Software prerequisite
 +
|Prerequisite kind=Required to use
 +
|Prerequisite description=[[Perl]] 5.8
 
}}
 
}}
 
{{Person
 
{{Person
 
|Real name=Ole Tange
 
|Real name=Ole Tange
 
|Role=Maintainer
 
|Role=Maintainer
|Email=ole@tange.dk
+
|Email=tange@gnu.org
 +
}}
 +
{{Resource
 +
|Resource audience=Savannah
 +
|Resource kind=Developer
 +
|Resource URL=https://savannah.gnu.org/projects/parallel/
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}}
 +
{{Resource
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|Resource audience=Savannah
 +
|Resource kind=Bug Tracking
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|Resource URL=https://savannah.gnu.org/bugs/?group=parallel
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}}
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{{Resource
 +
|Resource audience=Savannah
 +
|Resource kind=VCS Repository Webview
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|Resource URL=https://git.savannah.gnu.org/cgit/parallel.git/
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|Resource audience=Bug-parallel Info Page
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|Resource kind=Mailing List
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|Resource URL=https://lists.gnu.org/mailman/listinfo/bug-parallel/
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|Resource audience=Parallel Info Page
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|Resource kind=Mailing List
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|Resource URL=https://lists.gnu.org/mailman/listinfo/parallel/
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{{Resource
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|Resource audience=FTP
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|Resource kind=Mailing List
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|Resource URL=https://ftpmirror.gnu.org/parallel/
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{{Resource
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|Resource audience=FTP
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|Resource kind=Download
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|Resource URL=https://ftp.gnu.org/old-gnu/parallel/
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{{Resource
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|Resource audience=FTP
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|Resource kind=Download
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|Resource URL=https://alpha.gnu.org/gnu/parallel/
 
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{{Resource
 
{{Resource
|Resource audience=General
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|Resource audience=FTP
 
|Resource kind=Download
 
|Resource kind=Download
|Resource URL=http://ftp.gnu.org/gnu/parallel/
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|Resource URL=https://ftp.gnu.org/gnu/parallel/
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|Resource audience=Wikidata
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{{Software category
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{{EntryDetails
 +
|Is High Priority Project=No
 +
|VCS checkout command=git clone  git://git.savannah.gnu.org/parallel.git
 +
|Decommissioned or Obsolete=No
 +
|Version identifier=20240522
 +
|Version date=2024-05-22
 +
|Version status=testing
 +
|Last review by=Genium
 +
|Last review date=2024-05-23
 +
|User level=intermediate
 +
|Accepts cryptocurrency donations=No
 +
|OpenPGP signature=https://ftpmirror.gnu.org/parallel/parallel-20240522.tar.bz2.sig
 +
|Test entry=No
 +
}}
 +
{{Featured
 +
|Featured date=2011-12-31
 +
|Featured source=The Free Software Supporter
 +
|Featured category=GNU Spotlight
 
}}
 
}}
{{Featured}}
 

Latest revision as of 15:11, 23 May 2024


[edit]

GNU Parallel

https://www.gnu.org/software/parallel/
Build and execute command lines in parallel.

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 Pipe.pngbash.

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.





Licensing

License

Verified by

Verified on

Notes




Leaders and contributors

Contact(s)Role
Ole Tange Maintainer


Resources and communication

AudienceResource typeURI
SavannahDeveloperhttps://savannah.gnu.org/projects/parallel/
FTPDownloadhttps://ftp.gnu.org/gnu/parallel/
SavannahBug Trackinghttps://savannah.gnu.org/bugs/?group=parallel
SavannahVCS Repository Webviewhttps://git.savannah.gnu.org/cgit/parallel.git/
FTPDownloadhttps://alpha.gnu.org/gnu/parallel/
DebianDeveloperhttps://tracker.debian.org/pkg/parallel
FTPMailing Listhttps://ftpmirror.gnu.org/parallel/
WikidataGeneralhttps://www.wikidata.org/wiki/Q3093314
Parallel Info PageMailing Listhttps://lists.gnu.org/mailman/listinfo/parallel/
Bug-parallel Info PageMailing Listhttps://lists.gnu.org/mailman/listinfo/bug-parallel/
FTPDownloadhttps://ftp.gnu.org/old-gnu/parallel/


Software prerequisites

KindDescription
Required to usePerl 5.8

This entry (in part or in whole) was last reviewed on 23 May 2024.




Entry










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