Warning

Use a sudo-capable account, keep shell history for audit, and back up critical paths before changing boot, SSH, or package state.

What you will achieve

The systemd commands you need daily — services, timers, and why enable matters.

1) Manage service lifecycle

sudo systemctl status nginx
sudo systemctl restart nginx
sudo systemctl enable nginx

journalctl -u nginx -n 100 --no-pager

Reboot once and confirm the service returns active without manual intervention.

linux systemctl systemd