How to quickly determine if UFS2 FS is "clean" from command line?

[pluknet]

2008/12/26 Carlos A. M. dos Santos <unixmania at gmail.com>:
> On Fri, Dec 26, 2008 at 11:20 AM, Sean <sean at gothic.net.au> wrote:
>> Carlos A. M. dos Santos wrote:
>>>
>>> Be warned that file(1) resides at /usr/bin and depends on
>>> /usr/share/misc/magic*, so it may not be available in early boot
>>> stages, when /usr is not mounted yet. The following combination will
>>> suffice, and depends only on /sbin and /stand:
>>>
>>>     /sbin/ffsinfo -l 1 /usr/local | /rescue/sed -n 's/^clean *int8_t
>>> *\(.*\)/\1/p'
>>>
>>
>> Except FreeBSD hasn't had /stand for a long while, and there's no
>> /rescue/sed (at least on 6.x and 7.x). Also, /stand was only ever populated
>> on install and there's no guarantees it was ever up to date.
>
> Humm, 8.0 has /rescue/sed.
>

It's was added there over a year ago, but not in stable.

-- 
wbr,
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