Check network connection status.

connection-test

#!/bin/sh
LOGTIME=$(date "+%Y-%m-%d %H:%M:%S")
wget --spider --quiet www.google.co.jp
if [ "$?" == "0" ]; then
        echo '['$LOGTIME'] No Problem.'
        exit 0
else
        wget --spider --quiet www.baidu.com
        if [ "$?" == "0" ]; then
                echo '['$LOGTIME'] Problem decteted, restarting.'
                /usr/bin/updatelist
                /etc/init.d/shadowsocks restart
                /etc/init.d/chinadns restart
                /etc/init.d/dnsmasq restart
        else
                echo '['$LOGTIME'] Network Problem. Do nothing.'
        fi
fi