Start only one program at login

[Kanwar Ranbir Sandhu]

Hello,

I want to start one application after logging in from GDM, and nothing
else - I don't want any of the normal desktop environment.  I've been
testing with a few different apps, such as gnome-terminal, but so far my
attempts have failed.

I'm getting an error that says "no profile for user test found", and
then I get logged out again.

What I've done so far is create a .xsession file, changed the
permissions to 700, and added the following to the file:

exec gnome-terminal &

I know that won't give me any gnome settings, etc., but I'm just playing
around at the moment.  All I want to do for now is get gnome-terminal
started.

Thanks,

Ranbir