# systemctl > Control the systemd system and service manager. - List failed units: `systemctl --failed` - Start/Stop/Restart/Reload a service: `systemctl start/stop/restart/reload {{unit}}` - Show the status of a unit: `systemctl status {{unit}}` - Enable/Disable a unit to be started on bootup: `systemctl enable/disable {{unit}}` - Mask/Unmask a unit, prevent it to be started on bootup: `systemctl mask/unmask {{unit}}` - Reload systemd, scanning for new or changed units: `systemctl daemon-reload`