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





exec option in find

Terminal - exec option in find
find ~ -mtime +365 -exec mv {} /tmp/mybackup \;
2009-04-11 12:16:48
User: kayowas
Functions: find mv
exec option in find

This example uses the -exec option to move all matching files into a backup directory


There are 9 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Hmm... Be very careful when using find and mv like that. If you have duplicate filenames, bad things will happen. The first file gets moved to /tmp/backup, then then next file with that name will overwrite the first.

A safer idea would be to replace "mv" with "mv --backup=numbered". Now, each file will be given a unique name.

Comment by flatcap 338 weeks and 6 days ago

Should be replaced with something non-invasive for example, like ls instead of mv. Maybe this would be better:

find . -type f -exec ls -l {} \;

That executes ls on every file in the resulting list.

Comment by hank 338 weeks and 6 days ago

Both above are excellent ideas and points, also you may want to make this verbose as well as logging the output so that if something screws up, you have a record of it. sed and awk are your friends :)

Comment by GinoMan2440 338 weeks and 4 days ago

Your point of view

You must be signed in to comment.