#!/bin/bash
if test $# -lt 2
then
	echo "usage: `basename $0` <string> <dir1> [<dir2>...]" \
         " [<--> [<grep additional options>...]]" 1>&2
	exit 1
fi
str="$1" && shift
declare -a dir
i=0
while test "x$1" != "x"
do
	test "x$1" == "x--" && { shift; break; }
	test -d "$1" || { 
		echo "`basename $0`: $1: no such directory" 1>&2
		exit 1
	}
	dir[$i]="$1" && shift
	i=$((i+1))
done
j=0
while test $j -lt $i
do
	d="${dir[$j]}"
	case $d in
	-*) d="./$d";;
	esac
	find "$d" -type f -print0 | xargs -0 grep "$@" -- "$str"
	j=$((j+1))
done
exit 0