Cron – Is it possible to get a cron job to run between certain hours only

cron

I'm editing a crontab for a job that I want to run every minute but only between the hours of 10pm and 2am. Outside this time I'd like it to run every 10 minutes, I'm not sure if this is possible though.

Any help appreciated, thanks.

Best Answer

It would probably be best to have it a 2 separate jobs, one for each hourly group

* 22-23,0-2 * * * command
*/10 2-22 * * * command

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CRON expression for firing a scheduled job between two hours including last one

Why should it run at 20:00? You specify that the hour should be 8-19, so 20:00 doesn't match that. I am not sure if there can be a single line cron expression to accomplish your needs, but you could easily add a line

0 20 * * * ...

in addition to the existing one, that should do the trick.

Cron – Run cron job every 10 minutes, from 4:40 to 0:15

Sometimes you just have to break out the ugly, and duplicate entries to get selection logic like that. It should work and be pretty apparent with what it's doing without uber cron-fu knowledge.

40,50 4 * * * script
*/10 5-23 * * * script
0,10 0 * * * script

Oh, and a helpful site for generating these: http://www.openjs.com/scripts/jslibrary/demos/crontab.php

Best Answer

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CRON expression for firing a scheduled job between two hours including last one

Cron – Run cron job every 10 minutes, from 4:40 to 0:15

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