software null modems

[Aryeh M. Friedman]

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Poul-Henning Kamp wrote:
| In message <482C3875.1050509 at gmail.com>, "Aryeh M. Friedman" writes:
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|> I need a null modem and all I can find is straight through db25 cables
|> and I want to avoid the paper clip trick if I can. So is there any way
|> to create a null modem in software only?
|
| Man 4 nmdm
|
Perhaps I am just dense but it seems the nmdm creates the null modem 
completely in software and thus can not be used across a real cable.  
What I mean is it seems to serve only as a way to test console i/o via a 
simulated null modem.  What I am doing is I have a old sun sparc station 
20 but no monitor and the manual says  it can be configured via a null 
modem which implies I need a null modem between my PC and it and nmdm 
seems to be 100% virtual thus useless.
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