warning dialog box

[Bill Tangren]

Aleksandar Milivojevic wrote:
> Quoting Bill Tangren <bjt at aa.usno.navy.mil>:
> 
>> OK, zenity will display the dialog box, but where do I place the
>> command so that the dialog box is displayed either before or after the
>> user logs in via gdm?
> 
> I'd check out the stuff in /etc/X11/gdm directory.  Be carefull, some of 
> those scripts will run as root (for example PostLogin stuff), while 
> other will run as user.
> 
> 

How can I tell what is run in /etc/X11/gdm, and in what order? I put a zenity 
dialog box into /etc/X11/gdm/PreSession/default, but it was not displayed (that 
I could see).