NET 4000 Chapter Notes - Chapter 9.3.3: Init
Document Summary
The at daemon (atd) schedules tasks to occur once at a specific time in the future. The atd init script in the /etc/rc. d/init. d/ or /etc/init. d/ script directory on init-based distributions. The atd. service file and the systemctl command on systemd-based distributions. Uses configuration files to specify standard user accounts that can and cannot use the at command. /etc/at. allow specifies users who can use the at command. /etc/at. deny specifies users who cannot use the at command. If the at. allow file exists, then only users listed in the file are allowed to create at jobs. If at. allow does not exist, then just the users listed in at. deny are blocked from creating at jobs. Be aware of the follow general steps to use the at utility: enter at time. The at> prompt is displayed: enter each command you want to run at the at> prompt, one command per line. Press enter after each command: press ctrl+d to exit the at> prompt.
