Mask a unit systemd
Mask symlinks a unit to /dev/null so it cannot start even as a dependency; stronger than disable
systemctl mask <unit> && systemctl unmask <unit>
more systemd
all 26 commands →
Recursive dependency tree
systemctl list-dependencies <unit> --all
Live memory of a unit
systemctl show -p MainPID,MemoryCurrent,TasksCurrent <unit>
Clear failed state
systemctl reset-failed && systemctl list-units --state=failed
Transient one-shot timer
systemd-run --on-calendar='*-*-* 03:00:00' --unit=backup /usr/local/bin/backup.sh
Runtime resource cap
systemctl set-property --runtime <unit> MemoryMax=512M CPUQuota=50%