On Thu, Jun 15, 2000 at 01:42:28PM -0400, Andreas Wrede wrote:
> On Thu, 15 Jun 2000, Steve Woodford wrote:
> 
> Maybe like this:
> 
>         mv -f /var/log/dmesglog /var/log/dmesglog.0
>         dmesg | sed -n '/^NetBSD/h; /^NetBSD/!H; ${ x; p; q; }' \
>                 > /var/log/dmesglog
hmm.. what does this do? (i'm not up to speed on sed details)

>         diff -bc /var/log/dmesglog.0 /var/log/dmesglog > /tmp/diff.$$ 
>         if [ -s /tmp/diff.$$ ]; then
>                 cat /tmp/diff.$$ | Mail -s "hardware change" root
>         fi
>         rm -f /tmp/diff.$$

	mailing the diffs sounds like a next idea.  But you still loose
the old dmesg output the next time you reboot even if the output doesn't
change.  If you're going to be creating an old-boot dmesg file you might
as well make it useful.  (seen elsewhere: keeping all the previous dmesg's
with rcs might be a little more useful but it seems a bit like overkill)

eric