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From: connery@bnrmtv.UUCP (Glenn Connery)
Newsgroups: net.micro.pc
Subject: How to tell if stdout is console
Message-ID: <299@bnrmtv.UUCP>
Date: Sat, 5-Apr-86 16:03:05 EST
Article-I.D.: bnrmtv.299
Posted: Sat Apr  5 16:03:05 1986
Date-Received: Wed, 9-Apr-86 08:02:53 EST
Distribution: net
Organization: Bell Northern Research, Mtn. View, CA
Lines: 14

...
In writing a number of utilities it has become desirable to be able to
tell automatically if stdout has been redirected or not.  For example
in writing a directory lister which uses color through the BIOS it
should automatically go back to normal DOS I/O if the device is not
the console.  I can do this through fstat or isatty in MSC 3.0 if the
redirected device is a file and not a device, but I can't tell if the
user has redirected stdout to the printer or another device.

Any ideas?
-- 

Glenn Connery, Bell Northern Research, Mountain View, CA
{hplabs,amdahl,3comvax}!bnrmtv!connery