监控服务器下面某一进程是否正常启用

1：监听某一进程是否正常

#!/bin/bash
ulimit -c unlimited
cd /data/xj3/GameServer
if !(netstat -ntlp | grep 9999| grep -v grep)
then
echo -n "GameServer has been down at ">>/data/xj3/GameServer/server.log
'date'>>/data/xj3/GameServer/server.log
./XJServer &
fi