title: how to replace content of specified column in a huge file using Unix Command
body: <p>I have a huge file around 10 GB. And I want to replace its 35th column (separated by ;). Since, its a huge file, opening file in an editor is not an option. I want to do replace in all the lines of file.</p>
  
  <p>Somebody suggested me to use Sed but i am not comfortable with it yet. Could somebody suggest a unix command that can achieve the same. </p>