Après un bon plan indiqué sur le forum Hardware.fr (une mine d'or ce forum, on y passerait sa vie !)
A friend of mine who happens to be an avid screen user sent me this snippet below: What this handy snippet does is looks for a screen session, if it finds one it detaches the running screen, and reattaches it(-dr) if it isn’t lucky enough to find one, then it just starts a session up for you. Its rather handy to put in your .bashrc file to auto launch a screen session.