title: Perl program taking the latest login
body: <p>I have a log file in the log.txt file, I want to sort the username with the latest login </p>
  
  <p>Example- 
          If the user PAUL has 2 logins for January and one login for February it should take 
          the  February login details( as last login for PAUL)</p>
  
  <p>INPUT FILE: log.txt--</p>
  
  <pre><code>Administrator-25/02/2013
  Administrator-26/03/2013
  </code></pre>
  
  <p>OUTPUT FILE-</p>
  
  <pre><code>Administrator-26/03/2013
  </code></pre>