All recipes

Services (.service)

• Order a service after the network or another unit (After, Requires, Wants) 4 min →
• Pass environment variables to a systemd service 3 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 group 3 min →
• Run a program at boot as a systemd service 3 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 unit 2 min →
• Auto-mount an NFS or CIFS/SMB share with a .mount unit 4 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 directives 5 min →

Managing units

• Essential systemctl & journalctl commands for managing units 4 min →