freebsd-update and locally modfied files

[Lowell Gilbert]

Zbigniew Szalbot <zbyszek at szalbot.homedns.org> writes:

> Lowell Gilbert pisze:
>
>>> Now, I do not recall ever playing with jail. Anyway, how do I update the
>>> system (and keep changes to /etc/rc.d/jail (if any))?
>>
>> I suggest looking at the differences, and hand-updating to the latest
>> version of the file if it will server for you.  Then you should be
>> able to take updates in the future...
>
>
> Forgive me for asking but where do I take jail file to compare it to
> the existing one?

That depends on where it came from.  
I don't have such a file, and no port with a pkg-plist installs such a
file, so I can't tell where it came from.