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Domain 6
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)
NewStart, 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
NewReplace cron with systemd .timer units. Calendar schedules, monotonic timers, and the .service + .timer pair pattern.
~25 min~30% of domainsystemdtimerOnCalendarOnBootSec