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Update: correct systemd.timer notes

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Akemi Izuko 2023-12-23 20:14:11 -07:00
parent 3e72fad53d
commit ecf3853a9f
Signed by: akemi
GPG key ID: 8DE0764E1809E9FC
1 changed files with 11 additions and 1 deletions
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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 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 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 ```systemd
[Unit] [Unit]
Description = Sends current ip address to uni servers Description = Sends current ip address to uni servers
Requires = broadcast_ip.service
[Timer] [Timer]
Unit = broadcast_ip.service Unit = broadcast_ip.service
@ -64,3 +66,11 @@ OnCalendar = *-*-* *:15,45:00
[Install] [Install]
WantedBy = timers.target 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)