title: How to delete all lines containing more than three characters in the second column of a CSV file?
body: <p>How can I delete all of the lines in a CSV file which contain more than 3 characters in the second column? E.g.:</p>
  
  <pre><code>cave,ape,1
  tree,monkey,2
  </code></pre>
  
  <p>The second line contains more than 3 characters in the second column, so it will be deleted.</p>