systemd
Most popular Linux init system.
Controls units, e.g. services.
Mostly interacted with through systemctl.
Systemd is self-reliant and runs in the background.
systemctl
sudo systemctl status service-name
sudo systemctl start service-name
sudo systemctl restart service-name
sudo systemctl stop service-name
sudo systemctl enable service-name
sudo systemctl disable service-name
Unit Directory Priority
- /etc/systemd/system
- /run/systemd/system
- /lib/systemd/system