This repository has been archived on 2023-03-02. You can view files and clone it, but cannot push or open issues or pull requests.
dotfiles/.local/bin/sbacklight
2020-05-06 03:20:19 +02:00

19 lines
563 B
Bash
Executable File

#!/bin/sh
## Change the backlight value
## You need write privileges on /sys/.../brightness
## This can be achieved via a `udev` rule (see ~/.config/root)
current=$(cat /sys/class/backlight/intel_backlight/brightness)
max=$(cat /sys/class/backlight/intel_backlight/max_brightness)
step=$(expr $max / 20)
[ "$1" = "dec" ] && new=$(expr $current - $step)
[ "$1" = "inc" ] && new=$(expr $current + $step)
[ "$1" = "set" ] && new=$(expr $2 \* $step)
[ $new -gt 850 ] && new=850
[ $new -lt 0 ] && new=0
echo $new > /sys/class/backlight/intel_backlight/brightness