title: Compare two files
body: <p>I have 2 text files to compare on their first column. The following comm command shows the common lines from the 2 files correctly. </p>
  
  <pre><code>comm develop1.txt qa1.txt -12
  </code></pre>
  
  <p>But the following diff command does not show the difference as expected.</p>
  
  <pre><code>diff develop1.txt qa1.txt --side-by-side
  </code></pre>
  
  <p>Expected output is as follows:</p>
  
  <pre><code>mysql-data/webservice 280292 | mysql-data/webservice 28684
  </code></pre>
  
  <p>But these two values are not on the same line because the number in the last column are different. I do actually need to compare the numbers in side-by-side format.
  How can it be achieved?</p>