newsGNU Parallel - build and execute command lines from standard input in parallel - News: GNU Parallel 20171022 ('Catalonia') released [stable]

Latest News
GNU Parallel 20181022 ('Khashoggi') released posted by tange, Mon 22 Oct 2018 11:32:28 PM UTC - 0 replies
GNU Parallel 20180922 ('Danske') released [stable] posted by tange, Sat 22 Sep 2018 09:15:20 PM UTC - 0 replies
GNU Parallel 20180822 ('Genova') released posted by tange, Wed 22 Aug 2018 10:55:13 PM UTC - 0 replies
GNU Parallel 20180722 ('Crimson Hexagon') released [alpha] posted by tange, Sun 22 Jul 2018 07:41:25 AM UTC - 0 replies
GNU Parallel 20180622 ('Kim Trump') released posted by tange, Wed 20 Jun 2018 10:00:45 PM UTC - 0 replies
[Submit News]
[103 news in archive]

GNU Parallel 20171022 ('Catalonia') released [stable]

Item posted by Ole Tange <tange> on Mon 23 Oct 2017 07:18:03 AM UTC.

GNU Parallel 20171022 ('Catalonia') [stable] has been released. It is available for download at:

Very little new functionality was introduced so this is a good candidate for a stable release.

Haiku of the month:

Cores should never sit
idle - you have work to do!
Use GNU Parallel.
-- Ole Tange

New in this release:

  • Initial support for XDG Base Directory $XDG_* environment variables.
  • Bug fixes and man page updates.

GNU Parallel - For people who live life in the parallel lane.

About GNU Parallel

GNU Parallel is a shell tool for executing jobs in parallel using one or more computers. A job 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.

You can find more about GNU Parallel at:

You can install GNU Parallel in just 10 seconds with: (wget -O - || curl | bash

Watch the intro video on

Walk through the tutorial (man parallel_tutorial). Your commandline will love you for it.

When using programs that use GNU Parallel to process data for publication please cite:

O. Tange (2011): GNU Parallel - The Command-Line Power Tool, ;login: The USENIX Magazine, February 2011:42-47.

If you like GNU Parallel:

  • Give a demo at your local user group/team/colleagues
  • Post the intro videos on Reddit/Diaspora*/forums/blogs/ lists
  • Get the merchandise
  • Request or write a review for your favourite blog or magazine
  • Request or build a package for your favourite distribution (if it is not already there)
  • Invite me for your next conference

If you use programs that use GNU Parallel for research:

  • Please cite GNU Parallel in you publications (use --citation)

If GNU Parallel saves you money:


GNU sql aims to give a simple, unified interface for accessing databases through all the different databases' command line clients. So far the focus has been on giving a common way to specify login information (protocol, username, password, hostname, and port number), size (database and table size), and running queries.

The database is addressed using a DBURL. If commands are left out you will get that database's interactive shell.

When using GNU SQL for a publication please cite:

O. Tange (2011): GNU SQL - A Command Line Tool for Accessing Different Databases Using DBURLs, ;login: The USENIX Magazine, April 2011:29-32.

About GNU Niceload

GNU niceload slows down a program when the computer load average (or other system activity) is above a certain limit. When the limit is reached the program will be suspended for some time. If the limit is a soft limit the program will be allowed to run for short amounts of time before being suspended again. If the limit is a hard limit the program will only be allowed to run when the system is below the limit.

No messages in GNU Parallel 20171022 ('Catalonia') released [stable]


Back to the top

Powered by Savane 3.3