RH134 — System task scheduling
Systemd timers, tmpfiles, and recurring system tasks with cron.
Goal
Document chapter 4 of RH134 v10.0 while studying it: schedule and manage system tasks with systemd, cron, and temporary file policies.
Chapter content
| Section | Topic |
|---|---|
| 4.1 | Managing recurring jobs with systemd timer units |
| 4.2 | Guided exercise: systemd timers |
| 4.3 | Managing temporary files |
| 4.4 | Guided exercise: managing temporary files |
| 4.5 | Scheduling recurring system tasks with cron |
| 4.6 | Guided exercise: recurring system task with cron |
| 4.7 | Quiz: system task scheduling |
| 4.8 | Summary |
What I practice
- Paired
.timerand.serviceunits (systemctl list-timers,OnCalendar). - Temporary file cleanup with systemd-tmpfiles.
- Jobs in
/etc/cron.d/,/etc/cron.daily/, and root crontab constraints. - Difference between user tasks (ch. 3) and system tasks (ch. 4).
Reference commands
systemctl list-timers --all
systemctl status my-timer.timer
systemd-tmpfiles --clean
ls /etc/cron.d/Lab notes
(Fill in after exercises 4.2, 4.4, and 4.6: timer units created, tmpfiles rules, and system cron entries.)
Next step
Finish quiz 4.7 on ROL and paste the concrete lab steps here when the chapter is done.