find_file_containt_string.sh

#!/bin/bash

# Find all string from input, and search all file (*.txt) contains this strings.

#   Van-Duyet Le <[email protected]>
#   Homepage: http://lvduit.com

ext="./*.txt"

read -p "Your input string: " input

echo 'List file containt "' $input '"'


# Option 1 -----------------------------

for f in $ext
do
        if grep -l $input $f; then
                echo $f;
        fi
done


# Option 2 ------------------------------
grep -r  $input $ext | cut -d: -f1

Using Option 1 or Option 2