监听java进程sh，发现java丢失后，自动重启

#!/bin/bash
echo ========Check IDR System Java Process==============
date
   #echo Sleep 6 Seconds...
   #sleep 6
   pid=$(echo $(ps -e | grep java |awk '{print $1}'))
   echo $pid
if [ "$pid" == "" ] 
then
    echo "restart tomcat."
    export JAVA_HOME=/usr/local/jdk/jdk
    /homeIDRS-tomcat-7.0.108/IDRS-tomcat-7.0.108/bin/startup.sh
else
    echo "Process is Running"
fi