From: Andrew Jewett (
Date: Wed May 30 2012 - 15:41:25 CDT

since nobody else has answered yet...

"vi" is the toughest text editor which I know about.
(A similar program "vim" is available in windows, but you're safer
avoiding windows for this.)
Even if you can open them in "vi" or "vim", I worry it might be very
slow very time you want to make changes and commit them to disk (:w).

Instead I'd try splitting the trajectory into (many) pieces using
"split" or "csplit".
This might be probably a good idea anyway.
(There might be better splitter programs out there.)
I hope this helps

On Wed, May 30, 2012 at 2:44 AM, oguz gurbulak <> wrote:
> Dear All,
> I want to ask some questions about trajectory analysis. I have some md
> simulation output files that includes coordinate, force and velocity
> information. And these files are huge ( more than 5 GB ) . Could you please
> recommend a free text editor which works on Linux or Windows to  open and
> edit these huge files? And I will run these files with fortran codes and get
> again huge output files . In order to do this operation faster and
> seamlessly what should I do ? Which facilities do I have on pc ? Could you
> please share your experiences with me ?
> Thanks for any help.
> Kind regards.