Linux › Section F · How user space starts › Topic F.3
systemd operation, dependencies, and targets
Unit files describe what could run; systemctl and the dependency rules decide what does run, in what order, and in which overall state the machine ends up. These are the everyday tools of a Linux administrator.
In this topic
- Seeing what systemd is doing
- Reading systemctl status
- Starting, stopping and reloading
- Requirement dependencies
- Ordering is a separate question
- Enabling: the [Install] section
- Worked example: installing a new service
- Targets: named system states
- Worked example: a desktop becomes a server
- On-demand and parallel startup
- Common mistakes to avoid
- Key takeaways
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