Setting Screen Brightness
From Fiamma
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Setting screen backlight
Complexity: 1
In my case:
sudo tee /sys/class/backlight/radeon_bl0/brightness <<< 200
https://wiki.archlinux.org/index.php/backlight
Setting screen backlight
Complexity: 1
In my case:
sudo tee /sys/class/backlight/radeon_bl0/brightness <<< 200