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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

Top Tags



Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands by anarcat from sorted by
Terminal - Commands by anarcat - 11 results
find -type l -xtype l
pactl set-sink-mute 0 toggle
2014-02-06 04:50:17
User: anarcat

0 can also be replaced by the source name, e.g. alsa_output.pci-0000_00_1b.0.analog-stereo

2013-01-23 19:28:23
User: anarcat

This is not exactly a commandline, but a vim macro to automatically ditch the "old" version of a conflict when dealing with the naster

mysql -BNe "SELECT id FROM processlist WHERE user = 'redmine';" information_schema | while read id; do mysqladmin kill $id; done
2012-03-09 17:37:23
User: anarcat
Functions: kill read
Tags: mysql kill BOFH

Kills all the threads from the user provided in the WHERE request.

Can be refined through the SQL request, of course, see http://dev.mysql.com/doc/refman/5.1/en/processlist-table.html for the available columns.

mysql -BNe "SELECT user,COUNT(user) AS count FROM processlist GROUP BY user ORDER BY count;" information_schema
2012-03-09 17:25:23
User: anarcat
Tags: mysql

This shows the number of threads allocated per user.

^z; bg; disown
2011-12-06 20:48:01
User: anarcat

background and disown, but with a proper one-line syntax

rename s/^/./ *
du -sch *
2011-12-06 18:38:20
User: anarcat
Functions: du
Tags: space du disk

All folders, human-readable, no subfolder, with a total. Even shorter.

tcpdump -i eth0 -n | head
2011-12-06 18:34:51
User: anarcat
Functions: tcpdump

Sometimes it is useful to have just a general picture of "what is taking all the bandwidth here". Running this command will limit tcpdump to a few packets (instead of flooding your terminal endlessly) and will provide a small, but sometimes sufficient, sample to determine what is going on.

Useful to quickly diagnose DOS attacks.

netstat -anpe
2011-12-06 18:27:09
User: anarcat
Functions: netstat

Lists all opened sockets (not only listeners), no DNS resolution (so it's fast), the process id and the user holding the socket.

Previous samples were limiting to TCP too, this also lists UDP listeners.

2011-12-06 18:21:09
User: anarcat
Tags: history

!$ will be expanded to the last argument on the previous command. There are also positionnal parameters like !:1, !:2...