I try to create a timer unit for weekly and daily backups. For example with the weekly unit, it should be executed once in a week, some minutes after login. If the unit was successful, it should shutdown and not start again until the next week. If a start of this unit was missing, it should be start again some minutes after the next login.
But for some unknown reason, the current unit starts after every login when I reboot the laptop. I am relatively sure that this timer unit is set up wrong, but unfortunately I don’t know how I can implement such a unit better with the functions mentioned above.
[Unit]
Description=Run backup weekly
Requires=backup.service
[Timer]
Unit=backup.service
OnCalendar=weekly
RandomizedDelaySec=120
Persistent=true
[Install]
WantedBy=timers.target
the timer has no idea if it was triggered during last boot. It only has the context of “this” boot, so it will do it right after a reboot and set a timer to start the service again after a week of uptime.
So if you reboot every day, it will trigger the service every day, even though you set it to weekly in the timer.
So it’s up to your .service file to determine if it has been run this week or not.
