finds and prints unreferenced png files from xcode projects

findUnusedPngs.sh

#!/bin/sh
PROJ=`find . -name '*.xib' -o -name '*.[mh]'`

for png in `find . -name '*.png'`
do
    filename=`basename $png`
    name=${filename%.*}
    if ! grep -q $name $PROJ; then
        echo "$png is not referenced"
    fi
done