44 lines
602 B
Bash
Executable file
44 lines
602 B
Bash
Executable file
#!/bin/bash
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set -e
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path="/sys/class/backlight/intel_backlight"
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current_abs=$(cat "$path/actual_brightness")
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max_abs=$(cat "$path/max_brightness")
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percent=$(( max_abs / 100 ))
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current=$(( current_abs / percent ))
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new="$current"
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change=$2
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if [ "$1" = "-get" ]
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then
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echo "$current"
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exit 0
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fi
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if [ "$1" = "-inc" ]
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then
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new=$(( current + change ))
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fi
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if [ "$1" = "-dec" ]
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then
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new=$(( current - change ))
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fi
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if [ "$1" = "-set" ]
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then
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new=$2
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fi
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if [ "$new" -lt 10 ]
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then
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new=10
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fi
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if [ "$new" -gt 100 ]
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then
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new=100
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fi
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echo "$(( new * percent ))" | tee "$path/brightness"
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