" -bash: /usr/bin/crontab: Permission denied “.
The fix is to add the user to the “trusted” group in the group file (/etc/group). Let’s assume mu login is “elf”.
Make sure you are “root”.
#usermod -G trusted elf
This will add the user to the “trusted” group.
Display groups the user belongs to. Make sure “trusted” is on the list too.
The output might look like this. “uid=502(danny) gid=502(users) groups=502(elf),11(trusted)"
#su - elf
Add/Remove/Edit user cron jobs.
List user scheduled cron jobs
Please do comment if you have an alternative way to accomplish this or if I made a mistake.