title: How to get the first column of comm output?
body: <p>So I'm trying to get the first column of comm output using <code>awk</code>.
  I read that Tab was used as a separator for comm so I did: </p>
  
  <pre><code>awk -F"\t" '{print $1}' comm-result.txt
  </code></pre>
  
  <p>With comm-result.txt containing the output of:</p>
  
  <pre><code>comm -3 file1 file2
  </code></pre>
  
  <p>But this doesn't seem to work.</p>
  
  <p>This commend takes also the space character as a separator and I get weird results when my files contains multiple spaces.</p>
  
  <p>How can i only get the first column from <code>comm</code>?</p>