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



Find out how much data is waiting to be written to disk

Terminal - Find out how much data is waiting to be written to disk
grep ^Dirty /proc/meminfo
2011-08-24 08:48:49
User: h3xx
Functions: grep
Find out how much data is waiting to be written to disk

Ever ask yourself "How much data would be lost if I pressed the reset button?"

Scary, isn't it?


There are 8 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think


Comment by davidpgero 245 weeks ago

grep ^Dirty /*/meminfo # works on my system

#but ls /*/meminfo or eacho /*/meminfo only show a single file on my system.

Comment by Jessehz 245 weeks ago

grep ^Dirt /*/m*i* #may not work on other systems

#I'm running Ubuntu 11.04 AMD64

Comment by Jessehz 245 weeks ago


Comment by RanyAlbeg 245 weeks ago

@RanyAlbeq: You just wish you'd thought of it.

Comment by h3xx 245 weeks ago

@h3xx lol. Well said.

Comment by DaveQB 244 weeks and 6 days ago

To salve your conscience use


to write back data manually...

Comment by hons 243 weeks and 6 days ago

Your point of view

You must be signed in to comment.