current-users: How to update a running system?

Subject: How to update a running system?
To: None <current-users@NetBSD.ORG>
From: None <chammer@HRZ.Uni-Bielefeld.DE>
List: current-users
Date: 09/23/1996 14:45:11

Hi,
Is there a easy way to update a running system?
If i just untar a distribution i do not update all 
running programs. Can i rename them and do it then?
Why not? Is there a script for it? 

Security is not a big problem for me if this matters..
ciao
Carsten
--
Carsten Hammer  Schwindstr. 7 33615 Bielefeld
Fakultaet fuer Physik          D4-139
chammer@POST.uni-bielefeld.de
chammer@phyd2hammer.physik.uni-bielefeld.de