All recipes

Services (.service)

• Order a service after the network or another unit (After, Requires, Wants)4 min
• Pass environment variables to a systemd service3 min
• Run a one-shot task at boot (Type=oneshot)3 min
• Auto-restart a service when it crashes (with backoff and a rate limit)4 min
• Run a systemd service as a specific user and group3 min
• Run a program at boot as a systemd service3 min
• Run a long-running program as a user service (no root)3 min

Timers (.timer)

• Run a job daily at a specific time (and catch up after downtime)3 min
• Run a job every 5 minutes with a systemd timer (the cron replacement)4 min
• Run a job N minutes after boot, then on an interval (OnBootSec / OnUnitActiveSec)3 min
• Spread scheduled jobs with RandomizedDelaySec (avoid the thundering herd)3 min

Mounts (.mount)

• Mount a share only when it's accessed (.automount)3 min
• Create a bind mount as a systemd unit2 min
• Auto-mount an NFS or CIFS/SMB share with a .mount unit4 min

Path units (.path)

• Run a command when a file appears or changes (.path unit)3 min

Sockets (.socket)

• Socket-activate a service (start it on the first connection)4 min

Hardening

• Harden any service with sandboxing directives5 min

Managing units

• Essential systemctl & journalctl commands for managing units4 min