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.

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

Hide

Credits

Print a row of 50 hyphens

Terminal - Print a row of 50 hyphens
printf "%50s\n"|tr ' ' -
2010-01-07 08:49:46
User: rodolfoap
Functions: printf tr
-2
Print a row of 50 hyphens

Better -and faster- using bash printf.

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives
python -c 'print "-"*50'
2010-03-25 11:09:30
User: funky
Functions: python
9

essentially the ruby one, but perhaps has a larger installed base

seq -s" " -50 -1 | tr -dc -
2010-03-25 06:00:24
Functions: seq tr
5

Get there by going backwards and forgetting the numbers.

perl -le'print"-"x50'
2010-01-06 17:06:07
User: sputnick
Functions: perl
Tags: jot
4

Perl is installed by default on most modern OS when jot is not.

ruby -e 'puts "-" * 50'
for i in `seq 1 1 50`; do echo -n -; done
2010-03-25 10:22:19
User: Gosha
Functions: echo
1

This feels more intuitive to me.

Know a better way?

If you can do better, submit your command here.

What others think

Did you try to change IFS ? Seems impossible...

Comment by sputnick 290 weeks and 1 day ago

Its not the fastest...

Comment by cynicaljoy 290 weeks and 1 day ago

Not the fastest? haha.. all of them load applications or make one by one counters. This one uses the internal generator. Sadly, a lot of people has no idea about scripting...

Comment by rodolfoap 85 weeks and 4 days ago

Your point of view

You must be signed in to comment.