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GNU Parallel 20110622 ('Bean sprout') released

From: Ole Tange
Subject: GNU Parallel 20110622 ('Bean sprout') released
Date: Wed, 22 Jun 2011 02:00:31 +0200

GNU Parallel 20116022 ('Bean sprout') has been released. It is
available for download at:

For sysadmins this is a major release, as --onall makes it easy to run
the same commands on a list of computers.

New in this release:

* --onall will run all the jobs on all the computers. This is useful
  for systemadinistrators having multiple servers.

* --nonall runs like --onall but reads no arguments from stdin
  (standard input), so is possible to do:
  parallel --nonall -S computer1,computer2 uptime

* Context replace now works with multiple input sources:
  parallel -X echo {1}-{2} ::: 1 2 3 ::: a b c

* --noswap do not start a job on a server that is swapping.

* Article: Parallel processing without Hadoop!

* Article in Linux Magazine (Spanish). Thanks to Ben Martin.

* First blog post in Korean. Thanks to 민병국.

* Blog post in Japanese. Thanks to Naoya Nakazawa.

* Blog post in English. Thanks to Dagon.

* Bug fixes and man page updates.

= About GNU Parallel =

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.

You can find more about GNU Parallel at:

Watch the intro video on or
at and

When using GNU Parallel for a publication please cite:

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

= About GNU SQL =

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.

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