Posting a message on all desktops

To: debian-user@lists.debian.org
Subject: Posting a message on all desktops
From: Renaud (Ron) OLGIATI <renaud@olgiati-in-paraguay.org>
Date: Sat, 30 Jan 2016 16:33:31 -0300
Message-id: <[🔎] 20160130163331.70e25b4b@ron.cerrocora.org>

Is there a way for a system admin to post a message on the desktops of all the machines on a LAN ?
 
Cheers,
 
Ron.
-- 
              La marine est un art, une science, et un snobisme.
                                              -- Roger Glachant 
                                    
                   -- http://www.olgiati-in-paraguay.org --

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