Hide

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.

Hide

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:

Hide

News

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.
Hide

Tags

Hide

Functions

Rename all the files in the current directory into their sha1sum

Terminal - Rename all the files in the current directory into their sha1sum
find . -maxdepth 1 -type f| xargs sha1sum | sed 's/^\(\w*\)\s*\(.*\)/\2 \1/' | while read LINE; do mv $LINE; done
2010-01-25 20:21:01
User: foremire
Functions: find mv read sed sha1sum xargs
-1
Rename all the files in the current directory into their sha1sum

Alternatives

There are 4 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

can't see myself ever using this one ;)

but you get a *star* for effort!

Comment by linuxrawkstar 239 weeks and 5 days ago

That doesn't work if there are spaces in the filenames.

This does it in 59 chars, not 113 (spaces are OK, but I don't check for dirs):

for i in *; do mv "$i" $(sha1sum "$i" | cut -d\ -f1); done
Comment by flatcap 239 weeks and 5 days ago

This is a bit simpler if you're just doing files in the current working directory.

for i in *;do mv "$i" $(sha1sum "$i" | cut -d" " -f1);done
Comment by eightmillion 239 weeks and 5 days ago

Actually, my version needs a directory check:

for i in *;do [ -f "$i" ] && mv "$i" $(sha1sum "$i"|cut -d" " -f1);done
Comment by eightmillion 239 weeks and 5 days ago

60 chars, but more beautiful:

eval $(sha1sum * | sed 's/^\(\w*\)\s*\(.*\)/mv "\2" "\1";/')
Comment by flatcap 239 weeks and 5 days ago

Hmm, your sed expression is flawed. It breaks on files with leading spaces (unlikely, I know). Change the middle from "\s*" to " " (space space).

Comment by flatcap 239 weeks and 5 days ago

Thanks all, I'm new to sed, so the regex looks awkward.

Comment by foremire 239 weeks and 4 days ago

Some of them do not work if you have a file called:

'12" record'

Comment by unixmonkey8046 239 weeks and 1 day ago

Your point of view

You must be signed in to comment.

Related sites and podcasts