Ubuntu: Enable Disable stop start of the service at boot

Following commands can be used for enabling, dsabling, starting and stoping og a service. postgresql service is used in case:

Stop a service for the current session:

    systemctl stop postgresql

Start a service for the session:

    systemctl start postgresql

Check the status of service:

    systemctl status postgresql
 

Disable a service and it won't auto-start at boot

    systemctl disable postgresql
 

Enable service postgresql. This will make it auto-start
 

    systemctl enable postgresql