I'm managing almost 100 lab PC's running Fedora 19. It's difficult to manage because it seems like no where that I can display the hostname at the login screen.
GDM version: gdm-3.8-3.2
you can do
cat > /etc/dconf/db/gdm.d/01-mysettings <<EOF
banner-message-text='<PUT HOSTNAME HERE>'
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1 year ago