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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!

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Schedule a script or command in x num hours, silently run in the background even if logged out

Terminal - Schedule a script or command in x num hours, silently run in the background even if logged out
( ( sleep 2h; your-command your-args ) & )
2009-08-19 17:39:11
User: sitaram
Functions: sleep
Schedule a script or command in x num hours, silently run in the background even if logged out

doesn't require "at", change the "2h" to whatever you want... (deafult unit for sleep is seconds)


There is 1 alternative - vote for the best!

Terminal - Alternatives
echo "nohup command rm -rf /phpsessions 1>&2 &>/dev/null 1>&2 &>/dev/null&" | at now + 3 hours 1>&2 &>/dev/null
2009-08-18 07:31:17
User: AskApache
Functions: at echo

This is helpful for shell scripts, I use it in my custom php install script to schedule to delete the build files in 3 hours, as the php install script is completely automated and is made to run slow.

Does require at, which some environments without crontab still do have.

You can add as many commands to the at you want. Here's how I delete them in case the script gets killed. (trapped)

atq |awk '{print $1}'|xargs -iJ atrm J &>/dev/null

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What others think

That is absolutely brilliant! Love that.. Could you explain how it stays even after logging out? I confirmed that you were right about that.

Comment by AskApache 327 weeks and 4 days ago

it's called the "double fork" trick, but it woefully underdocumented as far as I can tell. Some day I'll write up an "as correct as I can make it" description but right now I have forgotten most of the details (this is really old stuff)

Comment by sitaram 326 weeks ago

Deserves to be in the site's - "All-time greats".

Comment by zlemini 292 weeks and 3 days ago

Your point of view

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