Trouble with the DISPLAY variable

[Göran Berlemo]

Hello!

I have a problem with the DISPLAY variable when I try to start an application on another server.

Server A is the one I am logged in to. Server B is the one holding the application I want to start. How do I set the DISPLAY variable to point to my screen without typing my screens name in. I.e. I want the DISPLAY to be set dynamicaly depending on whatever server/X-window terminal I'm using. This should be done in a script/ several scripts.
(the -display flag isn't availible for the application, sadly).

Regards

[Frederic Soriano]

Hi Goran,

You can use this piece of (sh) script (in your profiles for instance):

--snip--
DISPLAY_HOST=$(who -muR | awk '{print $NF}')
DISPLAY_HOST=${DISPLAY_HOST%%:0.0}
DISPLAY=$DISPLAY_HOST:0.0
export DISPLAY
--snip--

But this will work only from one server to another one. If you are on server A, and logs onto server B, then DISPLAY will be set to A:0.0. But if you are logging onto server C from server B, then DISPLAY will be set to B:0.0 !

I hope this helps !

Best regards.

Fred.

[Bill McNAMARA_1]

Good script!
Hey, there's another discussion on this
relating to a problem with root user opening
display. Pay attention and make sure the .profile is sourced by dt on dtlogin!
Well that's the hunch!!

Later,
Bill

[Göran Berlemo]

Hello again.

Is there any way to make the DISPLAY variable point to server A when logging into B and then C? That would be very useful. =)

Bill:

Which forum and what is the title/subject of that discussion?

/regards

[Frederic Soriano · Accepted solution]

Goran,

I think that the only way to do that is to encode the DISPLAY information into the TERM variable: have a look at the following thread:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x4f7d37f45ef7d4118fef0090279cd0f9,00.html

And more precisely to the last post, from Tim Malnati. There is a script attached that should help you.

Wishing you luck.

Best regards.

Fred.