#!/bin/bash

if [[ ("$1" = "") || ("$2" = "") ]]
then
	echo "usage : grep.all dir pattern"
	exit 1
fi
echo "grep in $1 for $2"
FILES=$(find $1 -type f -print)

for file in $FILES
do
	RESULT=$(grep $2 $file)
           if [ ! "$RESULT" = "" ]
           then
           	echo "$file : $RESULT"
           fi
done