From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Detecting stdin not redirected
Date: Sun, 29 Dec 2002 11:29:24 +0000
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hello.

CBFalconer wrote:
> 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.
[snip]

Take a look at isatty:

    info libc alpha isatty

Regards,

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]