Services
Service is a software program that runs in the background non-interactively. This serves a specific purpose, such as enabling remoting connections, serving web pages, or as a mail server.
To Lists all the running services:
sudo systemctl list-units
To start a service:
sudo systemctl start <servicename>
To stop a Service:
sudo systemctl stop <servicename>
To restart a Service
sudo systemctl restart <servicename>
To enable a service:
(Enabling is to ensure it auto-starts after reboot of the machine)
sudo systemctl enable <servicename>