shell判断指定网站是否正常

#!/bin/sh

[ -e /etc/init.d/functions ]&& . /etc/init.d/functions || exit 0

if [ $? -eq 0 ];then

for i in $(seq 1 1 255)

do

IP="172.20.100."

ping -c 1 $IP$i &>/dev/null

if [ $? -eq 0 ];then

action "ping $IP$i ok!" /bin/true &>>pingOK.txt

echo "#########################################" &>>pingOK.txt

else

action "ping $IP$i error!" /bin/false &>>pingERROR.txt

echo "#########################################" &>>pingERROR.txt

fi

echo "ping ip:172.20.100.1-255 ok!"

done

else

echo "reload /etc/init.d/functions file error!"

fi