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From: decanio@shadow (Tom DeCanio)
Newsgroups: comp.unix.programmer
Subject: Re: Input from another tty
Summary: What type of device is a /dev/dk???
Message-ID: <142737@pyramid.pyramid.com>
Date: 28 Jan 91 23:44:56 GMT
Sender: daemon@pyramid.pyramid.com
Lines: 24


You write:
>        I was wondering if there was a special command that I had to use 
>to have a program of mine - when I run it - accept input from another 
>terminal?  I have tried many times with different forms of:

>        read ANW < /dev/dk???
>      
>        while (true) do
>        cat (filename)
>        done&
>        (then have the other terminal write to (filename)
>
>
>I think that what I'll have to do, is to setup a  sub-routine to always 
>check a set file for new input and then grep the info in that file.

That may depend upon what type of device "/dev/dk???" you are attempting
to read from.  The only device I am familiar with that go by that name
are Datakit/ISN devices.  If so these devices are usually not hard wired
and aren't automatically available to be read/written upon open.  You
must do through a call setup sequence first.

Tom