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.

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.

UpGuard checks and validates configurations for every major OS, network device, and cloud provider.

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



Emptying a text file in one shot

Terminal - Emptying a text file in one shot
2009-03-28 02:28:19
User: acirulli
Emptying a text file in one shot

Within vi allow to empty a text file in one shot


There are 2 alternatives - vote for the best!

Terminal - Alternatives
2010-07-15 20:03:21
User: Vilemirth
Tags: vim vi

% = buffer

d = delete

2009-08-19 11:40:55
User: slim
Tags: vim vi

deletes to the end of the buffer


Know a better way?

If you can do better, submit your command here.

What others think

Or, you can do it without pressing your shift key. In command mode:

Comment by atoponce 472 weeks and 5 days ago

If you use bash, you can use this shortcut:

> filename
Comment by DNSpyder 472 weeks and 5 days ago

You can use % instead of 1,$.

Comment by cammarin 472 weeks and 5 days ago

atoponce: this only works in vim, not in vi.

Comment by lme 472 weeks and 5 days ago

You also need the shift key to type a capital G. Well, not necessarily but it's certainly the quickest way.

Comment by TheMightyBuzzard 472 weeks and 4 days ago

@DNSpyder: they mean inside vi/vim

Comment by roebek 472 weeks and 4 days ago

without any doubt it works also on vi....

also :%d is cool ;) thx cammarin

Comment by acirulli 472 weeks and 4 days ago

Your point of view

You must be signed in to comment.