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Update: correct systemd.timer notes

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Akemi Izuko 2023-02-20 12:44:51 -07:00
parent 55c40da886
commit d94146ea91
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12
notes/linux/systemd_timers.md
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@ -17,6 +17,9 @@ Time is in the format:
```
DayOfWeek Year-Month-Day Hour:Minute:Second
Fri *-*-* 00/1:00:00 # Every hour on fridays
*-*-* 2:15,45:0/3 # At 2am, fire it on ever third second at 15 and 45mins
```
To find suitable targets for things like `Wants` and `After`, see
@ -55,7 +58,6 @@ service file and put it in the same `/etc/systemd/system`
```systemd
[Unit]
Description = Sends current ip address to uni servers
Requires = broadcast_ip.service
[Timer]
Unit = broadcast_ip.service
@ -64,3 +66,11 @@ OnCalendar = *-*-* *:15,45:00
[Install]
WantedBy = timers.target
```
To make sure your unit doesn't always fire on boot, remove the `[Install]` from
the service and don't put a `Requires` line in the timer
## Further reading
- [Not firing timers on every
boot](https://superuser.com/questions/1559221/have-systemd-timer-not-run-on-boot-only-on-schedule)