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Date:      Wed, 10 Feb 1999 09:22:09 -0800 (PST)
From:      David Wolfskill <dhw@whistle.com>
To:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: suggestion for modular system configuration
Message-ID:  <199902101722.JAA02400@pau-amma.whistle.com>
In-Reply-To: <199902101557.KAA01257@cs.rpi.edu>

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>Date: Wed, 10 Feb 1999 10:57:57 -0500
>From: "David E. Cross" <crossd@cs.rpi.edu>

[Lots of elisions -- dhw]

>	if chkconfig inetd; then
>	 /usr/sbin/inetd
>	fi

>when chkconfig is run it looks for a file named /etc/config/$argv[1], that
>file simply contains one word 'on' or 'off'.  If the file contains 'on',
>chkconfig returns true, 'off' false.

>I propose that we adopt this system, with a couple of modifications that will
>make it even more powerfull and usefull.  Have an optional variable
>'CHKCONFIGPATH', that would behave similarly to 'XUSERFILESEARCHPATH' with
>respect to haveing some optional '%' expansions.

>Here is a preliminary idea:

>%N	_N_ame, equal to what is passed in argv[1].
>%H	_H_ost, fqdn.
>%h	_h_ost, hostname.

>A CHKCONFIGPATH path element that had no '%' expansions in it would default to
>ending with '/%N'.  A reasonable default CHKCONFIGPATH may well be:
>/etc/config/%N:/usr/local/etc/config/%h/%N:/usr/local/etc/config/%N
>-or perhaps-
>/etc/config/%h/%N:/etc/config/%N:/usr/local/etc/config/%h/%N:/usr/local/etc/config/%N
>(the occurance in the path 'wins').

The idea, dissimilar though it may be to traditional BSD practice,
certainly has its attractions.  I believe that providing an ability to
do a "dry run" (to see what would be started/stopped, and in what order,
but without actually starting or stopping processes) would be quite
useful.  (I tend to do this sort of thing with the Perl scripts that I
write, for example.)
 
>This would be a huge win for us here as we have a shared /usr/local, and
>with putting 'httpd.sh' in /usr/local/etc/rc.d as well as netatalk.sh and
>others we have had to do some special things to get only certain packages
>to run on certain hosts (it usually involves sucking in the entire rc.conf
>for EVERY SINGLE rc-file... as is already done by the system rc-files.  *yuck*)

I can empathize with that, certainly....

Cheers,
david
-- 
David Wolfskill		UNIX System Administrator
dhw@whistle.com		voice: (650) 577-7158	pager: (650) 371-4621

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