Shell Programming and Scripting

Hello,

I have the following script to restore file and grep information. However, once it restore file, it showing a lot useless information and different to check which file have the statement "John price $200". Can I not show any information while running script. It only show..when found the string?
echo Please input list file name:
read listn
for file in `cat $listn.txt`
do
restore_file $file
cat $file |grep "John price $200"
done

expect output:
filename: XXXXXX
found string: John price $200

Try this:

Code:

echo Please input list file name:
read listn

for file in `cat $listn.txt`
do
   restore_file $file > /dev/null 2>&1
   grep "John price $200" $file > /dev/null 2>&1
   (( ! $? )) && printf "filename: $file \nfound string: \"John price $200\"\n"
done

(not tested)

Regards.