Controlling settings from terminal/bash

[ramborikk]

Hello.
Since Ubuntu Touch is a true Linux operating system where the user has full control, it should also be possible to change settings from the terminal or bash script.
I'm primarily thinking of settings that you find in the GUI such as WiFi on/off, bluetooth, gps, screen rotation, hotspot, mobile data etc.
I know it is possible to control individual components as you would in a normal linux environment, but I want the buttons in the menus to also show that it is switched off or on.
Does anyone know if there is any documentation on this?

I also want information about which processes handle the various key components in the system. For example, which process listens to keys that are pressed on the physical buttons and whether you can enter your own actions?