Try to run emacs as daemon or server, and use emacsclient.
2011/08/09 6:39 "Renato" <rennabh@gmail.com>:
> Hello, simple question: I have the emacs gui started. How can I open a
> new file, from command line, such that it will open as
> a new buffer in the existing emacs process instead of starting a new
> emacs process?
>
>
> cheers
> renato
>