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Date:      Tue, 09 Mar 1999 22:02:19 +1000
From:      Greg Black <gjb@comkey.com.au>
To:        cjclark@home.com
Cc:        freebsd-questions@FreeBSD.ORG (FreeBSD Questions)
Subject:   Re: sh Tutorial 
Message-ID:  <19990309120219.10367.qmail@alpha.comkey.com.au>
In-Reply-To: <199903082249.RAA23765@cc942873-a.ewndsr1.nj.home.com>  of Mon, 08 Mar 1999 17:49:27 EST
References:  <199903082249.RAA23765@cc942873-a.ewndsr1.nj.home.com> 

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> Anyone out there know of a good tutorial for the Bourne shell (sh)? In
> particular, one with a focus on file descriptors. The few I find and
> the manpage say that the following line opens 'temp' for reading and
> writing and associates fd 3 with it,
> 
> exec 3<> temp
> 
> However, I get,
> 
> ./fdtest: 3: Syntax error: redirection unexpected
> 
> Whenever I use a '<>' redirect. What am I doing wrong? If I do either
> a '>' or '<' it works.

Seems like /bin/sh has a bug.  It works fine with bash -- and
bash comes with a decent man page and substantial additional
documentation which is worth reading.

-- 
Greg Black <gjb@acm.org>



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