title: Editing large text files on linux ( 5 - 10gb)
body: <p>Basically, i need a file of specified format and large size(Around 10gb). To get this, i am copying the contents of my original file into the same file, multiple times,  to increase its size. I dont care about the contents of the file as long as they have the required format. 
  Initially, i tried to do this using gedit, which failed miserably after few 100mbs. I'm looking for an editor which will help me do this. Or, may be a suggestion on alternate ways</p>