#!/bin/shecho "Current DIR is " $PWDwhile [ 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 5done