From owner-freebsd-stable@FreeBSD.ORG  Tue Feb  1 14:28:54 2011
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id EEBB81065774
	for <freebsd-stable@freebsd.org>; Tue,  1 Feb 2011 14:28:54 +0000 (UTC)
	(envelope-from ml@my.gd)
Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com
	[74.125.82.182])
	by mx1.freebsd.org (Postfix) with ESMTP id 9B1C98FC0A
	for <freebsd-stable@freebsd.org>; Tue,  1 Feb 2011 14:28:53 +0000 (UTC)
Received: by wyf19 with SMTP id 19so6991023wyf.13
	for <freebsd-stable@freebsd.org>; Tue, 01 Feb 2011 06:28:52 -0800 (PST)
Received: by 10.227.157.205 with SMTP id c13mr7678304wbx.136.1296570532117;
	Tue, 01 Feb 2011 06:28:52 -0800 (PST)
Received: from dfleuriot.local ([83.167.62.196])
	by mx.google.com with ESMTPS id f35sm16109158wbf.8.2011.02.01.06.28.51
	(version=SSLv3 cipher=RC4-MD5); Tue, 01 Feb 2011 06:28:51 -0800 (PST)
Message-ID: <4D4818A2.9030901@my.gd>
Date: Tue, 01 Feb 2011 15:28:50 +0100
From: Damien Fleuriot <ml@my.gd>
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US;
	rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7
MIME-Version: 1.0
To: freebsd-stable@freebsd.org
References: <20110201123506.GA97242@fbsd.t60.cpu>
In-Reply-To: <20110201123506.GA97242@fbsd.t60.cpu>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: Is /etc/rc.conf scriptable?
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 01 Feb 2011 14:28:55 -0000

On 2/1/11 1:35 PM, Yue Wu wrote:
> Hi list,
> 
> I'm trying to do something to make rc.conf can act conditionally
> 
> What I want is:
> 
> 1. List the wireless access points,
> 
> grep if there is one which bssid is 'bb:bb:bb:bb:bb:bb',
> 
> if there is, then set ifconfig_wlan0 to the value:
> 
>     "inet 192.168.1.111 netmask 255.255.255.0 WPA"
> 
> 2. check if bitlbee has been installed, if so, then let bitlbee
> service start.
> 
> 
> So I tried with following settings in rc.conf, but all of them failed,
> i.e., the networking can't be connected and bitlbee service doesn't
> run.
> 
> /etc/rc.conf
> 
> if ifconfig wlan0 list scan 2>/dev/null | grep -q 'bb:bb:bb:bb:bb:bb' >/dev/null 2>&1; then
>     ifconfig_wlan0="inet 192.168.1.111 netmask 255.255.255.0 WPA"
> fi
> if [ -x /usr/local/sbin/bitlbee ]; then
>     bitlbee_enable="YES"
> fi
> 
> My question is, how to achieve what I want? The simpler, the better :)
> 



You may want to call an external script directly from rc.local instead,
to avoid breaking stuff that parses rc.conf

Never know ;)
It's not like rc.conf is a totally critical file that will break your
startup if you mess it up...