Services & Processes

Controlling systemd services with systemctl — starting, enabling, masking, reading unit files, and creating scheduled timers. Roughly 10% of the EX200 exam.

Service management (systemctl)

New

Start, stop, enable, disable, and mask systemd units. Inspect unit state with status, is-active, is-enabled, cat, and show.

~30 min~70% of domainsystemctlstartstopenable

Systemd timers

New

Replace cron with systemd .timer units. Calendar schedules, monotonic timers, and the .service + .timer pair pattern.

~25 min~30% of domainsystemdtimerOnCalendarOnBootSec