How to Deny at Access

1. Become superuser.

2. Using the editor of your choice, open the /etc/cron.d/at.deny file.

3. Add the names of users, one per line, who will be prevented from using at commands.

   daemon bin smtp nuucp listen nobody noaccess username1 username2 username3 . . .

4. Exit the file, saving your changes.

Example--Denying at Access

The following example shows an at.deny file that has been edited so that the users Smith and Jones may not access at.

$ cat at.deny
daemon
bin
smtp
nuucp
listen
nobody
noaccess
jones
smith