title: ls all files in directory plus all files in directories one level down
body: <p>Ok I have the following situation.</p>
  
  <p>Caps are directories, lowercase are files.</p>
  
  <pre><code>A/aa
  B/bb
  C/cc
  D/dd
  D/E/ddd
  D/F/G/dddd
  a
  b
  c
  d
  </code></pre>
  
  <p>I want to do a ls that lists </p>
  
  <pre><code>a
  b
  c
  d
  A/aa
  B/bb
  C/cc
  D/dd
  </code></pre>
  
  <p>but not either</p>
  
  <pre><code>D/E/ddd
  D/F/G/dddd
  </code></pre>