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To: hackers@FreeBSD.ORG
X-To: Tim Kientzle <kientzle@acm.org>
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Subject: Re: Reading rc.conf from C programs? 
In-reply-to: Your message of "Thu, 02 Jan 2003 12:18:55 PST."
             <3E149EAF.9040100@acm.org> 
Reply-To: gkshenaut@ucdavis.edu
Date: Thu, 02 Jan 2003 17:31:30 -0800
From: Greg Shenaut <greg@bogslab.ucdavis.edu>
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In message <3E149EAF.9040100@acm.org>, Tim Kientzle cleopede:
>Terry Lambert wrote:
>
>> Tim Kientzle wrote:
>>>I'm trying to figure out how to read and use
>>>/etc/rc.conf configuration variables from within
>>>a C program. 
>> 
>> 	#!/bin/sh
>> 	# Throw all of rc.conf into the environemnet so a C program
>> 	# named "fred" can read any of them with "getenv".
>> 	. /etc/rc.conf
>> 	fred
>
>
>This doesn't work.  /etc/rc.conf does not export
>its variables to the environment.  It only sets them in the
>local shell.  Try the above where 'fred' is
>   #!/bin/sh
>   printenv
>and you'll see what I mean.

Try using the "set -a" command before reading rc.conf and
it will work:

	#!/bin/sh

	set -a
	. /etc/rc.conf
	exec yourprog

Greg Shenaut

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