Dead simple repository reference count

refcount.sh

#!/bin/bash
USAGE="usage: refcount.sh [string to check]"

if [[ $# = 0 ]] 
then
	echo $USAGE
	exit 1
fi

count=$(git grep -il $1 | wc -l)
list=$(git grep -in $1 | awk -F: '{print $2 "\t" $1}')
echo "Files containing references to $1 in the repo: $count"
echo
echo "$list"