>Number:         15629
>Category:       admin
>Synopsis:       Wouldn't it be nice if you got notified at boot about changes?
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    netbsd-admin
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 15 23:40:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     seebs
>Release:        NetBSD 1.5ZA
>Organization:
	N/A
>Environment:
System: NetBSD ged.plethora.net 1.5ZA NetBSD 1.5ZA (GED) #0: Sat Feb 16 00:05:37 CST 2002 seebs@ged.plethora.net:/usr/src/sys/arch/i386/compile/GED i386
Architecture: i386
Machine: i386
>Description:
	BSD/OS has this cool feature where it says things like "Configuration
	changed:" followed by diffs showing any changes in dmesg output.  This
	can be very handy when debugging.

	At the same time, there's also a /var/db/dmesg.boot showing what the
	system's boot-time configuration was like.

>How-To-Repeat:
	Boot a system.  :)

>Fix:

Save this script as /sbin/chkconfig.  In /etc/rc, right near the end, add:
---
echo "Checking system configuration..."
chkconfig

---

I put it before the 'date' at the end.

This script is structurally fairly similar to the BSD/OS chkconfig, and in
particular, that's where I got the idea for the sed script.

The chkconfig man page is pretty trivial, but could be written if there's
any interest.

#!/bin/sh
umask 022
old=/var/db/dmesg.boot
new=/tmp/ck$$.dmesg
out=/tmp/ck$$.out

dmesg | sed -n -e '/^NetBSD/ { x ; n ; }' -e 'H' -e '$ { x ; p ; }' > $new

if	[ ! -f $old ]
then	echo >&2 "No old configuration to compare with."
	cp $new $old
	exit 1
fi

diff $old $new > $out
if	[ -s $out ]
then	echo >&2 "Configuration changed:"
	cat $out
	R=1
else	R=0
fi
cp $new $old
rm -f $new $out
exit $R
>Release-Note:
>Audit-Trail:
>Unformatted: