Re single use and display, the original <div>notion of multiple users was that each</div><div>user would have an ASCII terminal, of,</div><div>say, the adm3 ilk. Displays of the kind</div><div>common today did not exist. This </div>
<div>somewhat explains the back and forth</div><div>on central servers and, later, things like</div><div>workstations, which were expensive early</div><div>examples of today's PC with a fab display.</div><div>With workstations the idea was central</div>
<div>backup - the servers were usually no </div><div>more powerful than the workstations hanging</div><div>off them. And of course DEC had multi-user</div><div>systems 35 years ago too.</div><div><br></div><div>I suspect today's balance of user hardware</div>
<div>versus central server is tipped totally in</div><div>the direction of the user. It's simple </div><div>economics. in general, one uses the central</div><div>server for backup, and as a repository for</div><div>
programs to be downloaded and used on a</div><div>client. 25 to 30 users on the typical server</div><div>today would probably eat it alive.</div><div><br></div><div>"This is a bit of an overgeneralization, but generally true."</div>
<div><br></div><div>I'll repeat that Unix was multi-user from</div><div>the beginning. It's essentially part of the</div><div>process approach. </div><div><br></div><div><a href="http://en.wikipedia.org/wiki/Multix">http://en.wikipedia.org/wiki/Multix</a></div>
<div><br></div><div>Multix was a precursor which never gelled,</div><div>but it did generate a lot of the concepts of </div><div>a multi-user system. Thompson and Ritchie</div><div>then went off and did it right.</div><div>
</div><div>As for Mac OS 11, I suppose one could look and </div><div>see whether the classic multi-user support software</div><div>is still somewhere - e.g., adduser, deluser,</div><div>etc. The things in /usr/sbin on Ubuntu 11.10.</div>
<div>If it's been stripped out for some </div><div>reason, it's possibly just to discourage use, or </div><div>to sell you another package which puts it back. </div><div>It's all been done before.</div><div>
<br></div><div> -- Bob</div><div><br></div><div><div><div><br><div class="gmail_quote">On Sat, Jan 7, 2012 at 1:35 PM, Adam Tauno Williams <span dir="ltr"><<a href="mailto:awilliam@whitemice.org">awilliam@whitemice.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Sat, 2012-01-07 at 10:19 -0500, Eric Beversluis wrote:<br>
> As I recall, *nix systems are supposed to be able to support multiple<br>
> logins.<br>
<br>
</div>This is a bit of an overgeneralization, but generally true. Android,<br>
for example, is a *nix based system.... that uses the *nix 'user<br>
container' concept in entirely different ways [and is almost inherently<br>
non-multi-user].<br>
<div class="im"><br>
> I thought this meant multiple users would get their own session.<br>
<br>
</div>No doubt they can; and I've ssh'd into a Mac in the past, so it works.<br>
But what you mean by "session" matters. This may have more to do with<br>
their display-infrastructure/desktop-environment than if it is, or is<br>
not, *nix. Mac's entire display-infrastructure is quite a radically<br>
different beast than the quasi-traditional X-server one used on<br>
LINUX/UNIX.<br>
<div class="im"><br>
> So I'm wondering if anyone knows if this can be done on Mac and if so,<br>
> how.<br>
<br>
</div>I have no technical answer; but from limited experience and "gut"<br>
premonitions I'd put my chips in the "no" column. Their DE feels<br>
tightly coupled to the display-system. A Mac may just host one-and-only<br>
one instance of the DE [think Mac-LTSP.... I can't picture how that<br>
would be possible given my understanding of Mac OS/X]. Don't quote me<br>
on it, but that's my guess. An actual technical answer would be<br>
interesting.<br>
<div class="im"><br>
> I can get remote access/remote management from my Linux box to my wife's<br>
> Mac, but it puts me into the same session as she's in, even tho I'm<br>
> logged in as myself. Is there some way to do remote desktop to her Mac<br>
> and get a second different session for myself?<br>
<br>
</div>Sure I can remote a Windows XP box via RDP; but I can't get my own<br>
session. And XP [an NT derivative] is unquestionably a technologically<br>
mutli-user system. But the DE has profoundly single-user concepts. You<br>
can slather single-user-ness on top of a multi-user system; that<br>
certainly makes some things simpler for certain purposes.<br>
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