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



Play music from youtube without download

Terminal - Play music from youtube without download
wget -q -O - `youtube-dl -b -g $url`| ffmpeg -i - -f mp3 -vn -acodec libmp3lame -| mpg123 -
2009-11-07 13:45:13
User: torrid
Functions: mpg123 wget
Play music from youtube without download


There are 6 alternatives - vote for the best!

Terminal - Alternatives
url="$my_url";file=$(youtube-dl -s -e $url);wget -q -O - `youtube-dl -b -g $url`| ffmpeg -i - -f mp3 -vn -acodec libmp3lame - > "$file.mp3"
2010-03-01 21:26:13

same as above but dumps the stream to a file.

Know a better way?

If you can do better, submit your command here.

What others think


Comment by JollyJumper 342 weeks ago

there's those backticks again... i swear we'll never rid ourselves of them

Comment by atoponce 341 weeks and 6 days ago

ffmpeg is giving error: "Unknown encoder 'libmp3lame' "

Which package contains this codec?

Comment by alperyilmaz 341 weeks and 5 days ago

@alperyilmaz which *nix flavour? The lib of the lame command is actually libmp3lame.so/a, so the package is probably lame.

To make ffmpeg use it, you have to compile it with --enable-mp3lame.

@atoponce I read all about evil backticks, and I'll try to avoid them now.^^

Comment by torrid 341 weeks and 5 days ago

How to extend this to download file directly with the name of the file matching the name on youtube title?

Comment by unixmonkey8504 325 weeks and 5 days ago

Technically, you're still downloading.

Comment by tommytwoeyes 63 weeks and 5 days ago

Your point of view

You must be signed in to comment.