title: Sorting data based on second column of a file
body: <p>I have a file of 2 columns and <code>n</code> number of rows.</p>
  <p>column1 contains <code>names</code> and column2 <code>age</code>.</p>
  <p>I want to sort the content of this file in ascending order based on the <code>age</code> (in second column).</p>
  <p>The result should display the <code>name</code> of the youngest person along with <code>name</code> and then second youngest person and so on...</p>
  <p>Any suggestions for a one liner shell or bash script.</p>