If you download the
_Events.groovy script from the Osoco’s GitHub repository and put in in the
scripts directory of your Grails project, you’ll get a nice bubble notifications on your Linux or Mac desktop.
This script requires libnotify (Linux) or Growl with growlnotify (Mac) installed. It assumes that
GRAILS_HOME environment variable is correctly pointing to a Grails distribution (in order to display the Grails goblet icon in the notification bubble).
Credits to @deigote for the Mac adaptation.