#!/bin/bash

for i in `find . -name "*.png" -o -name "*.jpg"`; do
 file=`basename -s .jpg "$i" | xargs basename -s .png | xargs basename -s @2x | xargs basename -s @3x`
 result=`ack -i "$file"`
 if [ -z "$result" ]; then
 echo "$i"
 fi
done