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

climagic's New Year's Countdown clock

Terminal - climagic's New Year's Countdown clock
while V=$((`date +%s -d"2010-01-01"`-`date +%s`));do if [ $V == 0 ];then figlet 'Happy New Year!';break;else figlet $V;sleep 1;clear;fi;done
2009-12-30 18:42:38
User: deltaray
6
climagic's New Year's Countdown clock

This is the 140 character long new year's countdown timer that was posted to the climagic account on twitter and identi.ca. There are saner ways of doing this of course, but probably none of those would fit. Uses the figlet command, but of course you can replace figlet with just echo if you want.

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

In my humble opinion, this syntax is a bit clearer and shorter:

until [ $V -eq 0 ];do V=$((`date +%s -d"2010-01-01"`-`date +%s`));figlet $V;sleep 1;clear;done;figlet 'Happy New Year!'
Comment by eightmillion 287 weeks and 2 days ago

Actually, that "-eq" should be "==" and the clear can be move up to the first thing after the "do":

until [ $V == 0 ];do clear;V=$((`date +%s -d"2010-01-01"`-`date +%s`));figlet $V;sleep 1;done;figlet 'Happy New Year!'
Comment by eightmillion 287 weeks and 2 days ago

eightmillion, good point. thanks.

Comment by deltaray 287 weeks and 2 days ago

What if I want to display minutes and seconds?

Comment by SuperFly 287 weeks and 1 day ago

vargasmas: you could do something like this:

until [ $V == 0 ];do clear;V=$((`date +%s -d"2010-01-01"`-`date +%s`));figlet $(python -c 'import time;print time.strftime("%H:%M:%S",time.gmtime('$V'))');sleep 1;done;figlet 'Happy New Year!'
Comment by eightmillion 287 weeks and 1 day ago

I thought it was -eq for integer comparison and == for alphanumeric?

Comment by DaveQB 286 weeks and 4 days ago

Your point of view

You must be signed in to comment.