title: How to delete duplicate lines in a file...AWK, SED, UNIQ not working on my file
body: <p>I find many ways to do this, <code>AWK</code>, <code>SED</code>, <code>UNIQ</code>, but none of them are working on my file. </p>
  
  <p>I want to delete duplicate lines.  Here is an example of part of my file:</p>
  
  <pre><code>KTBX
  KFSO
  KCLK
  KTBX
  KFSO
  KCLK
  PAJZ
  PAJZ
  </code></pre>
  
  <p>NOTE: I had to manually add line feeds when I cut and pasted from the file...for some reason it was putting all the variables on one line.  Makes me think that my 44,000 line text file actually has only "1" line?  Is there a way to modify it so I can delete dups?</p>