脚本监控2个进程有进程死掉重启进程

#!/bin/sh
echo "Current DIR is " $PWD
while [ 1 ]
do
  serverpid=`ps -ef|grep process1|grep -v grep|awk '{print $2}'`
  serverpid2=`ps -ef|grep process2|grep -v grep|awk '{print $2}'`
  if [ "$serverpid" ] && [ "$serverpid2" ]
  then
    echo "process1 is running,pid is " $serverpid
        echo "process2 is running,pid is " $serverpid2
    #kill -9 $serverpid 
  elif [ "$serverpid" ]
  then
    echo "process1 is running ,pid is ..." $serverpid
        echo "process2 is down, now starting...."
    dt=`date +%F`
    nohup /data/website/process2 2>>/data/socket/$dt"_pa_error.log" 1>>/data/socket/$dt"_pa_access.log" &
  elif [ "$serverpid2" ]
  then
    echo "process2 is running,pid is...." $serverpid2
        echo "process1 is down, now starting......"
        dt=`date +%F`
    nohup /data/website/process1 2>>/data/socket/$dt"_ad_error.log" 1>>/data/socket/$dt"_ad_access.log" &
  else
    echo "process1 is down ,now starting ..." 
        echo "process2 is down, now starting...."
    dt=`date +%F`
    nohup /data/website/process2 2>>/data/socket/$dt"_pa_error.log" 1>>/data/socket/$dt"_pa_access.log" &
        nohup /data/website/process1 2>>/data/socket/$dt"_ad_error.log" 1>>/data/socket/$dt"_ad_access.log" &
  fi

  sleep 5
done