Will a crontab job wake OS X up from sleep

cron

Since OS X has its own task scheduler, launchd, it appears that crontab is a relic.

Hence I'm wondering: Will a cron job (crontab) wake OS X up from sleep?

In case it matters, I'm on Yosemite 10.10.5.

Why I'm not switching to launchd? Laziness:

> man launchctl | wc
     463    2975   27730
> man crontab | wc
      72     433    3577

The man page is a lot larger, and crontab does everything I need.

Best Answer

cron doesn't execute while the computer is asleep. So cron can't wake your system.

See: https://superuser.com/a/14846/246895

Related Solutions

Where is the crontab file

If you don't want to use launchd, you can edit your crontab as you would do on any unix systems :

crontab -e

Or, you can use a GUI software like CronniX.

How to root launch a regular Mac application from a cron job in /etc/crontab

I figured out the key was to use su with -l, -c and single quotes:

su -l myloginname -c '/usr/bin/open -a [App].app'

In context:

*/15 * * * * root if { !  /usr/bin/diff  /var/tmp/foo /var/backups/bar >> /var/log/foobar-diff.log ; } ; \
then  /usr/bin/su -l myloginname -c '/usr/bin/open -a /Applications/iProcrastinate.app > /dev/null 2> /dev/null' ; \
/bin/date >> /var/log/foobar-diff.log ; fi

Best Answer

Related Solutions

Where is the crontab file

How to root launch a regular Mac application from a cron job in /etc/crontab

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