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.


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.
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

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!
Hide

Top Tags

Hide

Functions

Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Print text string vertically, one character per line.

Terminal - Print text string vertically, one character per line.
echo Print text vertically|sed 's/\(.\)/\1\n/g'
2009-03-04 23:58:02
User: axelabs
Functions: echo
8
Print text string vertically, one character per line.

Alternatives

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

elegant

Comment by linuxrawkstar 405 weeks and 3 days ago

... and the usefulness of this is...?

Comment by atoponce 405 weeks ago

I have had practical use for this. Needed to find all characters used in the texts for a computer game to make sure our font included all needed glyphs.

Passed all texts through sed and then let "sort --unique" find all needed letters.

Comment by palmin 292 weeks and 5 days ago

Another way to do this

echo Print text vertically| fold -c1
Comment by garchacesaug 276 weeks and 4 days ago

OS X's sed doesn't interpret \n in the replacement pattern, but you can use `sed $'s/./&\\\n/g'`.

& is the matched pattern, like $& in Perl and Ruby.

If LC_CTYPE is not already set to a UTF-8 locale, you can use `LC_CTYPE=UTF-8 sed` to make sed treat multibyte characters as single characters.

Comment by lri 170 weeks and 6 days ago

@garchacesaug,

wrong -c1,

true -s1

echo Print text vertically | fold -s1

Comment by saherteam 138 weeks and 4 days ago

Your point of view

You must be signed in to comment.