Scan for iTunes album art sizes.

scrape.sh

#!/bin/bash

rm -rf images
mkdir images

for i in {1..1024}
do
  for x in {1..100}
  do
    echo "Checking ${i}x${i}-${x}"

    CODE=`curl -o /dev/null --silent --head --write-out '%{http_code}' http://a4.mzstatic.com/us/r30/Music/v4/d7/b9/de/d7b9de4b-89c0-bd93-fa99-f5508a453af2/KatyPerryiTunes.${i}x${i}-${x}.jpg`

    if [ $CODE == "200" ]; then
      wget -O images/${i}x${i}-${x}.jpg http://a4.mzstatic.com/us/r30/Music/v4/d7/b9/de/d7b9de4b-89c0-bd93-fa99-f5508a453af2/KatyPerryiTunes.${i}x${i}-${x}.jpg
    fi
  done
done