Run one-shot as another user

Run a transient one-shot unit under a specific user

systemd-run --uid=1000 --gid=1000 --wait /usr/bin/myapp --task

More systemd commands

Create systemd timer

cat > /etc/systemd/system/backup.timer <<EOF [Unit] Description=Daily backup [Timer] OnCalendar=daily Persistent=true [Install] WantedBy=timers.target EOF

Replacement for cron with Persistent=true for missed runs
Set memory limit on service

systemctl set-property myapp.service MemoryMax=512M CPUQuota=50%

Apply cgroup limits without editing unit file
Show service resource usage

systemctl status myapp.service | grep -E 'Memory:|CPU:|Tasks:'

Current memory, CPU, and task counts from cgroup
List all socket units

systemctl list-units --type=socket --all

All socket-activated units and their state
Mask a service

systemctl mask snapd.service

Prevent a service from being started by anything