title: How to list all files in folders with a wildcard prefix
body: <p>I read in <a href="http://docs.aws.amazon.com/AmazonS3/latest/dev/request-rate-perf-considerations.html" rel="nofollow">this</a> amazon article that you should prefix folder names with a hash, so instead of storing </p>
  
  <pre><code>examplebucket/2013-26-05-15-00-00/cust1234234/photo1.jpg
  examplebucket/2013-26-05-15-00-00/cust3857422/photo2.jpg
  examplebucket/2013-26-05-15-00-00/cust1248473/photo2.jpg
  </code></pre>
  
  <p>you would instead store </p>
  
  <pre><code>examplebucket/232a-2013-26-05-15-00-00/cust1234234/photo1.jpg
  examplebucket/7b54-2013-26-05-15-00-00/cust3857422/photo2.jpg
  examplebucket/921c-2013-26-05-15-00-00/cust1248473/photo2.jpg
  </code></pre>
  
  <p>as this makes the lookup faster internally.</p>
  
  <p>It says you can then send a ListBucket request with a prefix like [0-f][0-f][0-f][0-f]-2013-26-05 if you want to list all the files for that day but i cant figure out how to actually send that wildcard as the prefix.
  When I send a ListObjectRequest with the wildcard prefix [0-f][0-f][0-f][0-f]-2013-26-05 I don't find any results, what am I doing wrong?</p>