On Tue, 11 Mar 2003, wrote: > Date: Tue, 11 Mar 2003 10:42:48 +0800 > From: <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED] > Subject: Re:RE: Meeting trouble when connecting VNC server running on > Linux. > > I have read some materials on VNC web site. > I learned that there are really some differences > between Windows and Linux graphic termial service. > > For example, on Windows only one graphic login is > permitted. And on Windows more than one person can > share the same desktop as VNC does. VNC Viewer does not > really login but transmit desktop snapshots and events. > But on Linux, allowing more than one person graphic > mode login is possible but share the same desktop is impossible! > > But I do not find any materials about why more than > one person can not share the same desktop on Linux. > Is it because the kernel of Linux graphic terminal > service? I am interested in this topic and want to > learn more about it. > > Do you have some materials about it? > Or some suggestions?
Unix started out as multi-user system. Many users connected at once, n the machine I am using right now there are more than 20,00 users, for instance. It would be quite a mess, I imagine if we all saw the same screen and could write to it. Who would decide what modifications were most current and whose version would wind up being saved? Windows grew from concept of PERSONAL computer. A single user. It later grew or developed into a network-capable (kinda)single user system. There ARE NO "separate" accounts on Windows -- not separate in the Unix sense -- only separate "preferences". Windows neither knows nor cares who uses it nor how many users are looking at the same screen. (It may be slightly different on Win2000, I don't know first-hand.) But that's the big picture. As I said before, there are probably ways around the Unix structure, database with locking, or specific collaborative software, or even ways to attach to the same screen. I don't know specifics about these. But what Win does easily, in this case, will be more difficult with Linux. Hope this will be of some help. If you want to go deeper, Tannenbaum has an excellent book on Operating Systems. He was Linus' teacher -- at least to begin with. ;) -Bill each having his own user-space, protected from other users. [EMAIL PROTECTED] SDF Public Access UNIX System - http://sdf.lonestar.org _______________________________________________ VNC-List mailing list [EMAIL PROTECTED] http://www.realvnc.com/mailman/listinfo/vnc-list
