Path: utzoo!utgpu!watserv1!watmath!att!ucbvax!ucsd!usc!cs.utexas.edu!harley
From: harley@cs.utexas.edu (Harley Hahn)
Newsgroups: comp.unix.i386
Subject: finding out what terminal you are logged into under VP/ix
Message-ID: <9900@cs.utexas.edu>
Date: 10 Jul 90 22:18:57 GMT
Organization: --
Lines: 25

Here is a neat trick.

I wanted to set my DOS prompt under VP/ix to tell me what
terminal I was logged in to.
However, there is no way to directly access this information
from DOS and there is no way (that I could find) to set a DOS
variable from Unix.

But, here's how you can do it.

Create a directory, call it, say, WHEREAMI.
In your AUTOEXEC file, change to WHEREAMI and delete
all the files.
Then, execute the following Unix command.  Even though it is in 
a DOS batch file, VP/ix will make it work:

   touch `basename \`tty\``

This will create a file with the name of your terminal,
VT01, VT02, CONSOLE, or whataver.

Next, use the IF EXIST statement to find which of these
files exists and set the prompt accordingly.

I have tested this and it works.