Where should I set the Display variable

[doc1623]

I'm really confused. So please bear with me. I am running FreeBSD 9.1 with Slim and Enlightenment with zsh. I noticed when I ran Terminator (this one http://www.tenshu.net/p/terminator.html) from the e17 menu. It was not able to launch a GUI program (like mupdf). Contrarily, the xterm was. I found that Terminator did not have the DISPLAY variable set but the xterm did. I was able to fix this by entering export DISPLAY=':0.0' in the ~/.zshenv file. I think, xterm got the Display variable from xdpyinfo -display :0.0 in the ~/.xinitrc file. If not I don't have a clue where it did.

Where should the DISPLAY variable be set (properly that is)? Does the 0.0 refer to the Screen in the /etc/X11/xorg.conf? If so, shouldn't that be passed to the session through some means? Dbus? Thanks for any clarification you can provide. I know this is just a lack of basic understandings on my part.

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

 

[wblock@]

DISPLAY is set by xinit(1).

 

[SirDice]

Does the 0.0 refer to the Screen in the /etc/X11/xorg.conf?

Yes. If I remember correctly it's something like <IP address>:<server#>.<screen#>. So :0.0 refers to the local machine (there's no IP address), the first server (you can have multiple X servers running) and the first screen.

 

[jwele]

...I noticed when I ran Terminator (this one http://www.tenshu.net/p/terminator.html) from the e17 menu. It was not able to launch a GUI program (like mupdf)....

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

I think you have to send the location of the pdf you want to open to mupdf for it to open up.

 

[doc1623]

Thank You all for the responses. I removed ~/.zshenv and changed the console_cmd in my /usr/local/etc/slim.conf

from

console_cmd         /usr/local/bin/xterm -C -fg white -bg black +sb -T "Console login" -e /bin/sh -c "/bin/cat /etc/motd; exec /bin/login"

to

console_cmd         /usr/local/bin/terminator -T "Console login" -e /bin/sh -c "/bin/cat /etc/motd; exec /bin/login"

I also added enlightenment to the sessions. Both terminal emulators start with the Display variable set now. Given time, I hope to better understand the interrelationships better of the various programs. I've learned at least a little today. Thanks again to everyone.