I found when i run this code

#! /bin/ksh

error_log="/tmp/log3.txt"
while
read line ;
do

show=`grep "$line" $error_log|tail -1`
case $line in
"Finished")
msg="VOLUME_MGR_ERROR"
echo $line
echo "$show|$msg\n"
;;
"WARNING")
msg="SYSTEM_ERROR"
echo $line
echo "$show|$msg\n"
;;
esac

done < err_list.txt

======Result=======

Finished
Jun 19 08:50:40 siamapl1 INFO: [ID 702911 user.error] [CPOSPO.sh]: PPMS Batch : Finished with return code 0|VOLUME_MGR_ERROR

WARNING
|SYSTEM_ERROR

grep: RE error 41: No remembered search string.

=================

How to solve?

thank in advance