What's this?

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.

If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

Universal configuration monitoring and system of record for IT.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:



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



command line russian roulette

Terminal - command line russian roulette
[ $[ $RANDOM % 6 ] == 0 ] && rm -rf / || echo *Click*
2009-02-16 01:17:04
User: Fuzzwah
Functions: echo rm
command line russian roulette

5 out of 6 times its really funny.


There are 9 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Deletes all your files 1 out of 6 times.

Comment by mysidia 388 weeks and 2 days ago

It would be funny if someone actually tried it ;-)

Comment by stii 388 weeks and 1 day ago

safe version :-P

[ $[ $RANDOM % 6 ] == 0 ] && echo "*BANG*" || echo "*Click*"

and it wouldn't delete your files 1 out of 6 times, every iteration has a 1 in 6 chance of deleting your files.

Comment by leprasmurf 388 weeks ago

It is funny.

Comment by Vadi 387 weeks ago

A pure bash way to do it :

(((RANDOM%6)==0)) && rm -rf / || echo *Click*
Comment by sputnick 373 weeks and 4 days ago

5 times over 6, this command will not work as expected if there is a file whose name starts or ends with "Click".

Comment by rbossy 351 weeks and 5 days ago
[ $[ $RANDOM % 6 ] == 0 ] && while true; do echo \a; sleep 2; done || echo *Click*
Comment by nhutto 246 weeks and 5 days ago

Your point of view

You must be signed in to comment.