Date: Thu, 20 Feb 2003 22:04:19 -0500 From: John De Boskey <jwd@bsdwins.com> To: Julian Elischer <julian@elischer.org> Cc: FreeBSD current users <current@FreeBSD.ORG> Subject: Re: config files and includes. Message-ID: <20030221030419.GA89373@BSDWins.Com> In-Reply-To: <Pine.BSF.4.21.0302201824180.43932-100000@InterJet.elischer.org> References: <Pine.BSF.4.21.0302201824180.43932-100000@InterJet.elischer.org>
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----- Julian Elischer's Original Message -----
>
> I have just gone through the process of upgrading or installing several
> hundred machines, and Thst includes altering or editing many config
> files in /etc. I like the way that rc.conf
> is handled, in that defaults/rc.comf can be updated and only the
> local changes live in r.conf. I wish that more files had this
> capability.
This is not exactly what you are asking for, but this is from
a petty much a been-there/done-that many years ago. Typing in
the logic from memory:
rcfiles="/etc/inetd.conf /etc/syslog.conf /etc/newsyslog.conf"
for rcf in $rcfiles; do
if [ -f ${rcf}.local ]; then
if [ ! -f ${rcf}.base ]; then
if diff ${rcf} ${rcf}.base > /dev/null; then
cp -p ${rcf} ${rcf}.base
fi
fi
cat ${rcf}.base ${rcf}.local > ${rcf}
fi
done
I think you can get the idea.
-John
> For example syslogd.conf or newsyslog.conf are updated between releases
> but they are also prime candidates for local additions.
> What would be really cool is if more config files could
> do 'includes' so that you could have a syslogd.local.conf
> wher eall your local entries could be. In addition you could make it
> look in /usr/local/etc/syslogd.conf for loging requirments for
> packages.
>
> To do this for every config file would be a lot of work. I do wonder
> however whether there couldn't be some "config-file reader" library
> routine that could be used to pre-pass files and do inclusions..
>
> if the interface was very similar to what is usually used
> (people tend to either use open/read/close or
> fopen/fscanf (etc).
>
> equivalent calls could be made that use a stream of data that is
> pre-processed to do inclusions etc. That would making retrofitting
> relatively easy. Programs that use yacc/lex ar emore difficult,
> but I haven't looked into it..
>
> anyhow, that was just a thought.
>
>
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--
--
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"Never ascribe to malice, that which is adequately explained by incompetence"
After being embraced by MS:
"When accused of malice, always hide behind incompetence".
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