title: Sorting a CSV file from greatest to least based a number appearing in a column
body: <p>I have a CSV file like this:</p>
  
  <pre><code>bear,1
  fish,20
  tiger,4
  </code></pre>
  
  <p>I need to sort it from greatest to least number, based on what is found in the second column, e.g.:</p>
  
  <pre><code>fish,20
  tiger,4
  bear,1
  </code></pre>
  
  <p>How can the file be sorted in this way?</p>