When I upgraded from Ubuntu 14.04 to 16.06, my cron jobs stopped running, apparently due to bad syntax.
What used to be OK: 0/5
(run every 5 minutes)
What needed to be changed: */5
So here are some resources for running cron and testing things in 2016:
- Run cron jobs (cron.daily, cron.weekly, etc.):
run-parts /etc/cron.daily
- Run cron jobs every X minutes:
*/X * * * * my_script.sh
- Verify crontab syntax:
cat -v /etc/crontab