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-   -   DISPLAY environment variable (https://www.linuxquestions.org/questions/slackware-14/display-environment-variable-150832/)

danahata 02-26-2004 02:48 PM

DISPLAY environment variable
 
If, as a user, I type 'echo $DISPLAY', I get :0.0. Though, if I type su - , and then 'echo $DISPLAY', I get nothing. This doesn't seem normal. Is this the same behavior for others? The reason I ask is that I think it's related to a problem I am having with a screensaver which grabs an image of the desktop not functioning properly.

Dana

david_ross 02-26-2004 03:12 PM

That is the correct behaviour. If you want to start an application on a specific X server you just need to change the DISPLAY variable.

danahata 02-26-2004 04:30 PM

Well I've got another machine with Linux and it's got it's DISPLAY varibale pre-set, I guess my question is, how can I make su - start up with its DISPLAY variable preset?

Dana


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