Become superuser or assume an equivalent role.
Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.
Create the /etc/cron.d/cron.allow file.
Add the root user name into the cron.allow file.
If you do not add root to the file, superuser access to crontab commands will be denied.
Add the user names, one user name per line. Include users that will be allowed to use the crontab command.
root username1 username2 username3 . . . |
The following example shows a cron.deny file that prevents user names jones, temp, and visitor from accessing the crontab command.
$ cat /etc/cron.d/cron.deny daemon bin smtp nuucp listen nobody noaccess jones temp visitor |
The following example shows a cron.allow file. The users root, jones, lp, and smith are the only users who can access the crontab command.
$ cat /etc/cron.d/cron.allow root jones lp smith |