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:



2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.

Top Tags



Download Youtube Playlist

Terminal - Download Youtube Playlist
y=http://www.youtube.com;for i in $(curl -s $f|grep -o "url='$y/watch?v=[^']*'");do d=$(echo $i|sed "s|url\='$y/watch?v=\(.*\)&.*'|\1|");wget -O $d.flv "$y/get_video.php?video_id=$d&t=$(curl -s "$y/watch?v=$d"|sed -n 's/.* "t": "\([^"]*\)",.*/\1/p')";done
2009-08-22 21:31:29
User: matthewbauer
Functions: echo grep sed
Download Youtube Playlist

This will download a Youtube playlist and mostly anything http://code.google.com/apis/youtube/2.0/reference.html#Video_Feeds

The files will be saved by $id.flv


There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

I've made a script that's a little prettier:

#!/bin/sh for a in $@ do for video in $(curl -s $a | grep -o "url='http://www.youtube.com/watch?v=[^']*'") do id=$(echo $video | sed "s|url\='http://www.youtube.com/watch?v=\(.*\)&.*'|\1|") wget -O ALL/$id.flv "http://www.youtube.com/get_video.php?video_id=$id&t=$(curl -s "http://www.youtube.com/watch?v=$id" | sed -n 's/.*, "t": "\([^"]*\)", .*/\1/p')" done done
Comment by matthewbauer 275 weeks and 3 days ago
curl -s http://www.youtube.com/view_play_list?p=C492ACC54B43F77C | grep -o "url='http://www.youtube.com/watch?v=[^']*'"

finds nothing.

Comment by bandie91 266 weeks and 2 days ago

You have to use the GData API:

curl -s http://gdata.youtube.com/feeds/api/playlists/C492ACC54B43F77C | grep -o "url='http://www.youtube.com/watch?v=[^']*'"

So just http://gdata.youtube.com/feeds/api/playlists/$id

Comment by matthewbauer 266 weeks and 2 days ago

@matthewbauer: Does the GData API method retrieve single page if the playlist contains items more than a certain number? I'm getting 24 items although there are 40 in playlist.

Comment by alperyilmaz 220 weeks and 4 days ago

It looks like, maximum item per page is 25. So if you have lots of items in your playlist, you need to parse the following:



so on so forth

What about a for loop:

for i in 1 26 51 76 101; do curl -s http://gdata.youtube.com/feeds/api/playlists/PLAYLISTID?start-index="$i" | grep -o "url='http://www.youtube.com/watch?v=[^']*'" ; done
Comment by alperyilmaz 220 weeks and 4 days ago

Your point of view

You must be signed in to comment.