Systemctl

The utility systemctl is used to control the services (daemons) running on the machine.

Usage

sudo systemctl start   <service_name>
sudo systemctl status  <service_name>
sudo systemctl stop    <service_name>
sudo systemctl enable  <service_name>
sudo systemctl disable <service_name>
 
systemctl list-unit-files    # Lists all services, enabled or not.

To make your own services manageable with systemctl:

1. Write a service configuration file.
2. Put *.service files inside /etc/systemd/system and then they become available for you to start, stop, enable, disable, etc.