设计一个脚本，监控远程的一台机器(假设ip为123.23.11.21)的存活状态，当发现宕机时发一封邮件给你自己。
#!/bin/bash#Remote monitoring.If the network is broken,email me~
ping -c10 www.baidu.com > 33.log
while [ "1" = "1" ]
do
t=$(awk '{print $1}' 33.log)
if [ ! -z $($t) ];then
echo" "
sleep 30
else
break;
fi
done
echo "DiaoXianLe" |mail -s "down" abc@139.com
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