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Date: Sat, 25 Oct 1997 10:11:58 +0930
From: Greg Lehey <grog@lemis.com>
To: David K Phinney <dphinney@dowco.com>
Cc: FreeBSD-Questions@FreeBSD.ORG
Subject: Re: Listing devices in 2.2.x
References: <199710241701.KAA27315@lithium.dowco.com>
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On Fri, Oct 24, 1997 at 10:01:59AM -0700, David K Phinney wrote:
> Hello,
>
> How does one go about listing configured devices in FreeBSD 2.2, it
> seems 2.1's `lsdev' command is no longer supported. (It hasn't been
> updated by CVSup in a while, and when I run it I get an error about
> hw.devconf.number not existing.) I can't use `dmesg' to see what it
> said at boot-up, because those messages have long since been pushed
> out of the buffer.
>
> Please mail your answers to me directly.  Thanks!

In my system /etc/rc, I have:

# Get the config changes
# Do this before we clean out /var/run
dmesg > /var/tmp/dmesg.boot
cmp /var/run/dmesg.boot /var/tmp/dmesg.boot >/dev/null 2>/dev/null
if [ $? -ne 0 ]; then
  echo '+++ Configuration changed:'
  diff -wu /var/run/dmesg.boot /var/tmp/dmesg.boot >/var/tmp/foobar
  cp -p /var/run/dmesg.boot /var/tmp/dmesg.boot2
fi

(cd /var/run && { rm -rf -- *; cp /dev/null utmp; chmod 644 utmp; })

# Now save /var/run/dmesg.boot
mv /var/tmp/dmesg.boot /var/run/dmesg.boot

This is roughly what BSDI do: it saves a copy of the dmesg output in
/var/run/dmesg.boot, so you can access it any time.

Greg