Provided by: flightgear_2018.3.2+dfsg-2_amd64
js_demo - Joystick demo application for FlightGear
js_demo is a FlightGear utility that shows detected joysticks and provides a way to monitor them as their axes are moved or their buttons are pressed.
js_demo always exits with 0.
fgfs(1), the FlightGear wiki "Input device" page ⟨http://wiki.flightgear.org/Input_device⟩