title: How to delete lot of objects named with common prefix from S3 bucket?
body: <p>I have files in S3 bucket, and their names have the following format: </p>
  
  <pre>username#file_id#...</pre>
  
  <p>How to remove all <code>john#doe#*</code> items, without listing them? There are thousands of them, so when user request my app to delete all of them, he has to wait.</p>