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Date: Mon, 20 Mar 2006 23:48:48 -0500
From: "Lev Bishop" <lev.bishop@gmail.com>
To: cygwin@cygwin.com
Subject: Re: Redirect stdin & stdout to serial port
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On 3/20/06, D.Pageau wrote:
> <>
>
> no permission denied but output is still stdout

This is expected, because <> operator says to open for read/write on
descriptor 0. It doesn't say anything about stdout.

> </dev/ttyS0 >&0
>
> no permission denied but output is not redirected to /dev/ttyS0, not
> stdout either.

This is also expected, since ttyS0 was opened for reading, so you
can't write on it, even if you do attach it to stdout.

I think the solution might be a combination of both of Igor's suggestions
cmnd <> /dev/ttyS0 >&0

Ie, open the port read/write on stdin and then dup it to stdout.

Let me know if that works.

Lev

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