在有些Linux发行版上，WiFi指示灯在通信时不停的闪烁。下面给出一种方法停止这种闪烁：
#!/bin/sh
if [ "`id -u`" != "`id -u root`" ]; then
echo "`whoami`: you need root priviledge to run this application. Invkoing sudo ..."
exec sudo bash -c "$0 $@"
fi
for trigger in /sys/class/leds/iwl-*X/trigger; do
echo none > $trigger
cat $trigger
done