107.2 – Automate system administration tasks by scheduling jobs

Weight

4

Description

Candidates should be able to use cron and systemd timers to run jobs at regular intervals and to use at to run jobs at a specific time.

Key Knowledge Areas

• Manage cron and at jobs.

• Configure user access to cron and at services.

• Understand systemd timer units.

Files, Terms, and Utilities

• /etc/cron.{d,daily,hourly,monthly,weekly}/

• /etc/at.deny

• /etc/at.allow

• /etc/crontab

• /etc/cron.allow

• /etc/cron.deny

• /var/spool/cron/

• crontab

• at

• atq

• atrm

• systemctl

• systemd-run