title: unix console: how to delete lines that contained in other lines
body: <p>I have a text file that contains sorted paths e.g.</p>
  
  <pre><code>/abc
  /abc/def
  /abc/jkl
  /def
  /def/jkl
  /def/jkl/yui
  /def/xsd
  /zde
  </code></pre>
  
  <p>now I'd like to delete lines that contained in other lines in this case following lines should stay:</p>
  
  <pre><code>/abc/def
  /abc/jkl
  /def/jkl/yui
  /def/xsd
  /zde
  </code></pre>