Message-ID:	<3E0EA6CF.51896D97@yahoo.com>
From:	CBFalconer <cbfalconer AT yahoo DOT com>
Organization:	Ched Research
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Newsgroups:	comp.os.msdos.djgpp
Subject:	Detecting stdin not redirected
Lines:	15
Date:	Sun, 29 Dec 2002 07:40:30 GMT
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

With gcc and DJGPP, how can a running program detect that stdin
has not been redirected from the keyboard?  How portable is such a
method, i.e. will it hold up for Linux?  To allow for use of
external terminals, I guess the thing wanted is to detect that
stdin is actually a disk file (or a pipe) as opposed to a device.

There are bits available with some calls or other in the DOS
interrupt group, but I guess the question is how exposed are
these, and obviously any such will not be Linux portable.

-- 
Chuck F (cbfalconer AT yahoo DOT com) (cbfalconer AT worldnet DOT att DOT net)
   Available for consulting/temporary embedded and systems.
   <http://cbfalconer.home.att.net>  USE worldnet address!

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