title: Difference between two .tar.gz file lists on linux
body: <p>Having two different .tar.gz files: The second .tar.gz is the subset of first .tar.gz. </p>
  
  <p>I need a single line command to find the missing files in second .tar.gz.</p>
  
  <p><strong>E.g.:</strong> </p>
  
  <p><strong>1.tar.gz file list:</strong></p>
  
  <pre><code>1.jsp
  2.txt
  3.htm
  </code></pre>
  
  <p><strong>2.tar.gz file list:</strong></p>
  
  <pre><code>1.jsp
  3.htm
  </code></pre>
  
  <p><strong>output should be:</strong> </p>
  
  <pre><code>2.txt
  </code></pre>