RGB信仰灯

echo 255 > /sys/class/leds/red/brightness
echo 0 > /sys/class/leds/green/brightness
echo 0 > /sys/class/leds/blue/brightness

while true
do
    sleep 1
    echo 255 > /sys/class/leds/green/brightness
    sleep 1
    echo 0 > /sys/class/leds/red/brightness
    sleep 1
    echo 255 > /sys/class/leds/blue/brightness
    sleep 1
    echo 0 > /sys/class/leds/green/brightness
    sleep 1
    echo 255 > /sys/class/leds/red/brightness
    sleep 1
    echo 0 > /sys/class/leds/blue/brightness
done
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原文地址：https://www.cnblogs.com/JebediahKerman/p/12500204.html