Joseph Herlant
version 1.0.0, 2014-07-10 : Initial version

The 2 files used to allow or deny crontabs are: /etc/cron.allow and /etc/cron.deny.

These files are ruled by the following:

  • If /etc/cron.allow exists and contains any user login, only these users are allowed. Any other user cannot use crontabs (and /etc/cron.deny is ignored).

  • If /etc/cron.allow does not exists or is empty and /etc/cron.deny exists, if it’s empty, everyone can use crontab, else, everyone but the logins listed in the /etc/cron.deny file will not be able to use crontab.