Asmctl is a command line tool for Apple System Management Controller,
which controls the keyboard backlight and LCD backlight.

Assigning following key bindings work similar to Apple MacBook series.

| key |      assign       |
|-----|-------------------|
| F1  | asmctl video down |
| F2  | asmctl video up   |
| F5  | asmctl key down   |
| F6  | asmctl key up     |

WWW: https://github.com/yuichiro-naito/asmctl