systemd manages almost everything that runs on a modern Linux system through units. A unit is a configuration object of a certain type, named by suffix: .service for daemons, .socket for socket activation, .timer for scheduled jobs, .mount for mounts, .target for groups of units, and more. systemctl is the tool you use to control them, and learning to separate 'now' from 'at boot' is the key to most exam questions.
Free account
Keep reading for free
Create a free StudyToCert account to read the rest of this lesson: 7 more sections, 6 key terms, a real-world example, an exam tip and self-check questions. Every lesson, lab and practice test is free with an account.