CmdID / Commands
Manage screen backlight brightness. tldr-pages
On several platforms
Opens CmdID with your command. It is read in your browser and sent nowhere.
Print current brightness and maximal brightness, shortened and separated by a slash
ybacklight Sc/Sm
Specify the brightness
ybacklight s420
Increase the brightness by 42 big steps (4200 by default)
ybacklight Si42
Decrease the brightness by 300
ybacklight d300
xbacklight