For Linux Ubuntu versions that use "systemd" (15.04 and later) use:
systemctl disable service
It will disable service autostart and won't restart after a reboot. To temporarily enable simply start the service. Not enable.
To find the service name use:
systemctl list-units --type=service
See services that have already been added to "systemctl" autoload:
systemctl list-unit-files --type=service --state=enabled
Other systemctl commands are:
systemctl start service - start a service.
systemctl stop service - stop a service.
systemctl restart service - restart a service
systemctl status service - status of a service.
Auto-start service settings:
systemctl enable service - Turns auto-start service on.
systemctl disable service - Turns auto-start service off.