22 lines
637 B
Bash
Executable file
22 lines
637 B
Bash
Executable file
#!/bin/sh
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max_brightness=`cat /sys/class/backlight/intel_backlight/max_brightness`
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brightness=`cat /sys/class/backlight/intel_backlight/brightness`
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increment=12000
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if [ "$1" = "down" ]; then
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new_brightness=$(($brightness - $increment))
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if [ $new_brightness -lt 0 ]; then
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new_brightness=0
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fi
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else
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new_brightness=$(($brightness + $increment))
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if [ $new_brightness -gt $max_brightness ]; then
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new_brightness=$max_brightness
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fi
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fi
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echo $new_brightness > /sys/class/backlight/intel_backlight/brightness
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ratio=$(( (new_brightness * 100) / max_brightness ))
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notify-send -r 43 "Brightness: ${ratio}%"
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