title: Linux get the size of a folder and its subfolders to a certain depth
body: <p>In Linux, I have the following folder structure, I want to get the size of the folder and its subfolders to a certain depth.</p>
  
  <p>I have this structure:</p>
  
  <pre><code>/AAAA/BBBB/1111
  /AAAA/BBBB/2222
  /AAAA/BBBB
  /AAAA/CCCC
  /AAAA/DDDD/3333
  /AAAA/DDDD
  /AAAA
  </code></pre>
  
  <p><code>du -m</code>, shows me the entire tree, not just 2 levels as I need.  What is the proper command?</p>