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sindi keesan wrote:
>
> On the server 

clark

> I typed export DISPLAY (etc. - see below)
> in.telnetd -debug
> 
> On the client 

lois

> I typed telnet clark
> I got the login screen in my rxvt on lois, in which 
> I can run programs in X on clark.
> 
> Can someone on clark also run programs in X 

Yes, clark can provide a display for a local user, as 
well as providing displays for any number of remote users.

> I have not figured out what & and exec mean yet

&     run in background
exec  run without starting new process (replace this one)

> How would I set this up so that someone could dial my 
> computer 

You set up /etc/inittab to run a getty on your modem.

> and telnet to it over the phone line?  

Not telnet.  The remote caller runs a terminal program.

> Also pppd and the same telnet server? 

Neither.

> What IP number for the client?

None.  You don't use TCP/IP.

Cheers,
Steven

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