每5秒監控5000埠的shell指令碼

#!/bin/bash
while true;do
echo "************************************************************"
date
# ================================================================


TCPListeningnum=`netstat -an | grep ":5000" | awk '$1 == "tcp" && $NF == "LISTEN" {print $0}' | wc -l`
if [ $TCPListeningnum -eq 0 ]
then
{
echo "listener port is down">>/root/1.log
#如果5000埠down了，重啟tomcat服務
cd /Smaritbi/apache-tomcat-7.0.34/bin/
./shutdown.sh
./start.sh
}
else
{
echo "5000埠正常" >>/root/l.log
date
}
fi
sleep 5;
done
~        

執行該指令碼
nohup sh 1.sh > /dev/null 2>&1&