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24 lines
372 B
24 lines
372 B
3 years ago
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#!/bin/sh
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usage () {
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printf "usage: %s [red|green|blue|white] [0-255]\n" "$0"
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exit 1
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}
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[ $# -lt 2 ] && usage
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case $1 in
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red|green|blue) color="$1"; type="indicator" ;;
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white) color="$1"; type="flash" ;;
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*) usage ;;
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esac
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if [ "$2" -lt 0 ] || [ "$2" -gt 255 ]
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then
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usage
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fi
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brightness="$2"
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printf "%s\n" "$brightness" > "/sys/class/leds/$color:$type/brightness"
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