Hotplug running user scripts
This is more of a general X11/*nix question, I suppose. When I plug
in a USB device into my laptop I want hotplug to run a script as a
specific user and I'd like to use GTK+ or Xdialog to prompt for some
What I'm not sure of is how to determine the user's $DISPLAY.
For example, when a USB camera is connected I'd like to pop up a dialog
and ask if the user wants to transfer photos to their $HOME/photos
I realize there may be more than one $DISPLAY running. And there can
even be more than one set of display hardware on a given machine. Not
to mention my knowledge of running an X server is limited. So I'm not
clear how to accomplish this.