title: Equivalent of "du" command on a Amazon S3 bucket
body: <p>I'm looking for a solution to recursively get the size of all my folders on a Amazon S3 bucket which has a lot of embedded folders.</p>
  
  <p>The perfect example is the Linux <code>du --si</code> command:</p>
  
  <pre><code>12M ./folder1
  50M ./folder2
  50M ./folder2/subfolder1
  etc...
  </code></pre>
  
  <p>I'm also open to any graphical tool.  Is there any command or AWS API for that?</p>