Date: Thu, 4 Oct 2001 23:34:59 -0700 From: "Crist J. Clark" <cristjc@earthlink.net> To: Dag-Erling Smorgrav <des@ofug.org> Cc: freebsd-audit@FreeBSD.ORG Subject: Re: dmesg.boot Gets Overwritten without Reboot Message-ID: <20011004233459.M297@blossom.cjclark.org> In-Reply-To: <xzpwv2bau40.fsf@flood.ping.uio.no>; from des@ofug.org on Fri, Oct 05, 2001 at 01:00:31AM %2B0200 References: <20011003221310.Q8391@blossom.cjclark.org> <xzpelojfwdk.fsf@flood.ping.uio.no> <20011004152541.I297@blossom.cjclark.org> <xzp1ykjc9gc.fsf@flood.ping.uio.no> <xzpwv2bau40.fsf@flood.ping.uio.no>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, Oct 05, 2001 at 01:00:31AM +0200, Dag-Erling Smorgrav wrote:
> Dag-Erling Smorgrav <des@ofug.org> writes:
> > $ find /var/run -type f -name dmesg.boot -newermt "$(sysctl -n kern.boottime | sed 's/.*}//')"
> > /var/run/dmesg.boot
>
> Sorry, I forgot you don't have sed(1) available. Use this:
Actually, we do. If we're playing in /var...
> boottime="$(sysctl -n kern.boottime)"
> foo="$(find /var/run -type f -name dmesg.boot -newermt "${boottime#*\}}")"
> if [ "${foo}" != "/var/run/dmesg.boot] ; then
> echo 'Spank me!'
> fi
But more intereting, does this tickle a sh(1) bug? I've reproduced
this on several FreeBSD machines (-STABLE and -CURRENT),
#!/bin/sh
boottime="$(sysctl -n kern.boottime)"
echo "Without quotes: " ${boottime#*\}}
echo "With quotes: " "${boottime#*\}}"
Produces,
Without quotes: Thu Oct 4 11:44:35 2001
With quotes: { sec = 1002221075, usec = 383948 } Thu Oct 4 11:44:35 2001
I'm not sure what is going on in the second one. I've tried to do some
metacharacter escapes, but no luck.
bash produces,
Without quotes: Thu Oct 4 11:44:35 2001
With quotes: Thu Oct 4 11:44:35 2001
Which is more like what I expect.
--
Crist J. Clark cjclark@alum.mit.edu
cjclark@jhu.edu
cjc@freebsd.org
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-audit" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20011004233459.M297>