From: Hugh Sasse <hgs@...>
Date: 2005-12-01T02:01:20+09:00
Subject: Re: Exim mail filter in ruby

On Thu, 1 Dec 2005, chrisjroos@gmail.com wrote:

> Hi,
> 
> I have a requirement to create a shell script that accepts data on it's
> standard input, calls another shell script (out of my control), passing
> an amended copy of the original input, and collects anything sent to
> stderr and stdout by the external script.  This shell script is to be
> used as a mail filter being called from exim.

I don't find this description very clear.  Which part of exim are
you using to do this?  That might help me understand.
> 
> I got a basic version working using Kernel.open but got very confused
> when trying to trap the output of that external script (stderr and
> stdout).

What about using the shell in  popen("/bin/sh command 2>&1", "r+") ?
  
The stdout and stderr are combined, but you can still write to it.

        Hugh