Been googling gui, popup, window - seems very complicated - all I want is the ability, from bash, or perl, under wheezy, to put up an information window on desktop - just some text that lasts for n seconds and tells me when some script or program running in the background or started using @reboot, has started, or when an error has occurred. In windows it is called a message box.
Must be something out there - Can someone pls point me at something.
TIA John