/etc/systemd/system/timers.target.wants/ Current File: //etc/systemd/system/timers.target.wants/fstrim.timer

[Unit]
Description=Discard unused blocks once a week
Documentation=man:fstrim
ConditionVirtualization=!container

[Timer]
OnCalendar=weekly
AccuracySec=1h
Persistent=true

[Install]
WantedBy=timers.target