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From: Mike Brown <mike@skew.org>
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Subject: Re: FreeBSD-update?
In-Reply-To: <5178602F.9010805@herveybayaustralia.com.au>
To: Da Rock <freebsd-questions@herveybayaustralia.com.au>
Date: Wed, 24 Apr 2013 17:07:10 -0600 (MDT)
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Da Rock wrote:
> sysctl kern.version

For me, that's the same info as in uname -a.

Try this:

grep -v # /usr/src/sys/conf/newvers.sh | head -4