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X-Authentication-Warning: slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date: Sat, 14 Jun 2003 19:03:34 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Alex Vinokur <alexvn AT connect DOT to>
cc: cygwin AT cygwin DOT com
Subject: Re: Redirect both stdout & stderr to the same file
In-Reply-To: <bcf44r$6md$1@main.gmane.org>
Message-ID: <Pine.GSO.4.44.0306141900400.25752-100000@slinky.cs.nyu.edu>
Importance: Normal
MIME-Version: 1.0
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On Sat, 14 Jun 2003, Alex Vinokur wrote:

> ===========================================
> Windows 2000
> CYGWIN_NT-5.0 1.3.22(0.78/3/2)
> GNU gcc version 3.2 20020927 (prerelease)
> ===========================================
>
> ------ C code : BEGIN ------
> /* File t.c */
> #include <stdio.h>
> int main()
> {
>   fprintf (stdout, "(1) to stdout\n");
>   fprintf (stderr, "(2) to stderr\n");
>   fprintf (stdout, "(3) to stdout\n");
>   return 0;
> }
> ------ C code : END --------
>
> $ gcc t.c
>
> $ a &>zzz
>
> $ cat zzz
>
> (2) to stderr
> (1) to stdout
> (3) to stdout
>
> -----------------------
> Expected :
> (1) to stdout
> (2) to stderr
> (3) to stdout
> -----------------------
>
> What is wrong?

Buffering.  stdout is buffered, stderr isn't.  Try adding "fflush(stdout)"
after the first fprintf.  This is a basic C stdio question, it'll work the
same way on Linux, FYI.
	Igor
P.S.  In your defense, unlike sh, bash supports both the "2>&1" and "&>"
syntaxes.
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster."  -- Patrick Naughton


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