System shutdown warning
I recently installed FC6 on the workstations in a computer lab at the school where I work. I am new to Linux, but have enjoyed the challenge.
My most recent challenge is that if I initiate a shutdown of a workstation (remotely or via a cron job), the user of the workstation receives no warning of the impending shutdown in the gnome desktop window. (Users in text consoles do see the shutdown messages.) Is there any way to make the shutdown warning appear to desktop users, perhaps as an IM-like popup?
xmessage -center -timeout 60 "Shutting down..."