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



get a random number in bash

Terminal - get a random number in bash
echo $[RANDOM % 100] # range 0-99
2013-05-25 19:02:00
User: anapsix
Functions: echo
get a random number in bash

use it to stagger cronjob or to get a random number

increase the range by replacing 100 with your own max value


There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Now, it's not all that easy to find round http://www.fakeoakleysonlineshop8.com/">foakleys. To get a extended time, these eyeglass options were the very first choice among film stars and sports athletes as well as authors and even celebrities. Actually, the filter layer long molecules are oriented horizontally, and they could absorb the horizontally polarized light. In this way, many of the reflected light is eliminated, and the surrounding atmosphere with the illuminance will not be lowered. Political heavyweight which include Mahatma Gandhi spawned a complete new rage for these kinds of eyeglasses. This can be because these http://www.fakeoakleysonlineshop8.com/">knockoff oakleys add a one of a kind character and flair. When someone does this, it could result in some thing identified as CVS or personal computer vision syndrome. Pc glasses also possess a huge middle zone than a regular pair of prescription glasses. Should you be more than forty years of age, CVS occurs because of a situation known as presbyopia. For computer system users who're more than forty years of age, presbyopia is usually a common dilemma. Take into consideration lots of things like convenience, functions, size and materials when trying to pick one. Whats far more, square http://www.foakleysvippop.com/">foakleys are a superb alternative because they make you look much more confident and they're also very elegant as well as give the wearer a appear of energy.

Comment by ganshang 249 weeks and 3 days ago

Your point of view

You must be signed in to comment.