Date: Tue, 21 Jul 2009 11:29:20 +0200 From: Polytropon <freebsd@edvax.de> To: chris scott <kraduk@googlemail.com> Cc: freebsd-questions@freebsd.org Subject: Re: backticks in rc.conf Message-ID: <20090721112920.c174849b.freebsd@edvax.de> In-Reply-To: <d36406630907210146m4e84c7dbpd55776168a50090c@mail.gmail.com> References: <d36406630907210146m4e84c7dbpd55776168a50090c@mail.gmail.com>
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On Tue, 21 Jul 2009 09:46:47 +0100, chris scott <kraduk@googlemail.com> wrote:
> can i use backticks in rc.conf?
Basically, yes. The /etc/rc.conf file is run through sh, it is
a shell script that assigns values to variables, but can (ab)use
it to execute programs.
> rsyncd_flags="--config=/etc/rsyncd.conf --address="` ifconfig bce1 | grep
> inet | awk '{print $2}'`
>
> it works fine from the shell, however on reboot the address section doesnt
> expand, or rather it goes blank
You should use the full pathnames leading to ifconfig, grep, and awk.
Make sure they are accessible when rc.conf is "executed".
--
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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