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systemd

Running systemctl, optionally specify --system or --user.

Services​

Sockets​

Control​

List​

See everything systemd controls: systemctl or systemctl --user. Add --all to see everything, running or not.

List all available services:

# System-wide:
sudo systemctl list-units -t service --all

# User:
systemctl --user list-units -t service --all

Listing running processes with ps and cgroups:

ps xawf -eo pid,user,cgroup,args

Analyze​

Like systemctl, optionally specify --system or --user.

  • Boot process duration: systemd-analyze
  • Critical chain time tree: systemd-analyze --critical-chain
  • Diagnose processes: systemd-analyze blame

journald

  • View logs: journalctl
  • Boot logs: journalctl -b
  • Follow logs in real-time: journalctl -f

Appendix: hostnamectl

Nifty "who's this computer?".

$ hostnamectl

   Static hostname: rafi-desk
         Icon name: computer-desktop
           Chassis: desktop
        Machine ID: 3329fhkrj2dj923jr38dj3983jd83rj3
           Boot ID: 4f2jf8sbx834xgjs298fjs9rh1f8s328
  Operating System: Arch Linux
            Kernel: Linux 3.17.1-1-ARCH
      Architecture: x86-64