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/
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.
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
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:
you can also use cut instead of awk. less powerful but probably faster. ;)
There is 1 alternative - vote for the best!
If you can do better, submit your command here.
You must be signed in to comment.
You can do the whole thing (more successfully even) with versions of grep that support PCRE (like GNU grep).
Compare:
curl -sAOpera "http://www.google.com/search?q=linux" | grep -Pio '(?<=href=['\''"])[^:]+://[^'\''"]+'
curl -sAOpera "http://www.google.com/search?q=linux" | egrep -ie "<*HREF=(.*?)>" | cut -d "\"" -f 2 | grep ://
Fails if the attributes do not use " characters as start/end tokens. Does not pick up any URLs in any attributes other than HREF, nor will it recognize relative URLs and change them to absolute URLs.