title: Bash script compare number obtained from a cut
body: <p>I have a string like this </p>
  
  <pre><code>"Hello catch these numbers 20 30"
  </code></pre>
  
  <p>And I have:</p>
  
  <pre><code>NUMBER_ONE=$(echo "$line" | cut -d' ' -f5)
  NUMBER_TWO=$(echo "$line" | cut -d' ' -f6)
  </code></pre>
  
  <p>When I compare <code>if [ "$NUMBER_ONE" -gt  "$NUMBER_TWO" ];</code> I got error, it expect an integer expression. How do I solve?</p>