外接荧光键盘显示背光代码：

代码如下：

status=/tmp/keyboard_led_status

if [[ ${1} == "on" ]] || [[ ! -e ${status} ]]; then
xset led named 'Scroll Lock' && echo "on" > ${status}
else
xset -led named 'Scroll Lock' && rm -f ${status}
fi