Linux › Section G · System configuration › Topic G.6
One-time tasks with at and user timer units
Not every job repeats. Sometimes you want a file removed at midnight, a reminder in two hours or a script run when the machine is quiet. The at command, transient systemd timers and per-user timer units cover these cases without editing a crontab.
In this topic
- Run it once, later
- The at command
- Time specifications
- Worked example: resolving at times
- Managing the queue
- batch: wait for a quiet machine
- Transient timers with systemd-run
- Worked example: at versus systemd-run
- User timer units
- Common mistakes to avoid
- Key takeaways
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