50 lines
566 B
Bash
50 lines
566 B
Bash
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#!/usr/bin/env bash
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save="/tmp/bkl"
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idle_backlight=0
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fade_step_time=0.02
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get_brightness() {
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float=$(light -G $1)
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printf '%.*f\n' 0 $float
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}
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save(){
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get_brightness > "$save"
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}
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resume(){
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val=$(cat "$save")
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set_backlight "$val"
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}
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set_backlight(){
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local level
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for level in $(eval echo {$(get_brightness)..$1}); do
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light -S $level
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sleep $fade_step_time
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done
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}
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while getopts "drs0" opt; do
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case $opt in
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d)
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set_backlight "$idle_backlight"
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;;
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r)
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resume
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;;
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s)
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save
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;;
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0)
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set_backlight 0
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;;
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*)
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exit 1
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;;
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esac
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done
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