Grep Script Prompting question

Shell Programming and Scripting
1

I saw this wonderful script in a previous post and modified it to work, my question is
is there a way to enable a prompt at the GREP portion to allow me to enter what I wish to grep before hand?

#!/bin/sh

DATE=`date +%Y%m%d%H%M%S`
HOME=/u/home/xxx/report
LOG_DIR=/var/log/
CONSOLE_FILE=ncolog
ALERTS_FILE=report
CONSOLE_OUTPUT=/u/home/xxx/console
ALERTS_OUTPUT=/u/home/xxx/alerts

cd $LOG_DIR

tail -f $CONSOLE_FILE > $CONSOLE_OUTPUT &

grep -i "PROMPT!" $CONSOLE_FILE > $CONSOLE_OUTPUT

a=`ls -lrth $CONSOLE_OUTPUT |awk '{print$5}'`

if [ $a -eq 0 ];
then
     echo "The file is empty"
else
     echo "The Vaule of A differs, please check"
     #/usr/bin/printf "*****  NVC ALERT - $DATE *****\n\nHost: `hostname` \n\nDATE: `date` \n\n" | /bin/mailx -s "Error $DATE  " amil@ex
fi

exit 0
2

I would imagine you can just throw a prompt in there...

 
echo "What would you like to search for?"
read inputValue
 
grep -i "$inputValue" $CONSOLE_FILE > $CONSOLE_OUTPUT

I don't see any reason why it wouldn't work. Didn't test, just throwing it out there.