Windows

• Services-> Noodle-> [re]start

or

• net (stop|start) noodle

Linux

• service noodle (start|stop|restart|status)

or

• systemctl (start|stop|restart|status) noodle.service

To set this up see Running Noodle as a Service.

To stop Noodle on Windows use the Task Manager to kill Java or with

taskkill /IM java.exe /F