I have a box with 4 X11 servers running on it with the following designations: :3.0, :2.0, :1.0, :0.0

I have a Moose class that launches an application (a Firefox browser) and then uses the X11::GUITest module to perform some operations on the application. I can change which display the application runs on and which display X11::GUITest operations are sent to by setting the $ENV{'DISPLAY} system variable like so:

package FFMech;
$ENV{'DISPLAY'} = ':3.0'; # open app in display #3 and send X11::GUITe
+st operations to it 
use X11::GUITest  qw(SendKeys ClickWindow);
use Moose;

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Instead of hard coding the DISPLAY variable, I'd like my FFMech object to be able to set this variable. How do I achieve this?

$PM = "Perl Monk's";
$MCF = "Most Clueless Friar Abbot Bishop Pontiff Deacon Curate";
$nysus = $PM . ' ' . $MCF;
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In reply to How to set $ENV{'DISPLAY'} variable programatically? by nysus

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