finding kernel 'r' number

Brandon Gooch jamesbrandongooch at
Thu Jun 16 12:58:52 UTC 2011

On Thu, Jun 16, 2011 at 7:16 AM, Robert Huff <roberthuff at> wrote:
>        For some time now, people have been referring to what build
> they're using by the 'r' number, which I believe to be part of svn.
>        How would one go about determining this value for the installed
> kernel?
>                                        Robert Huff

That would be uname(1):

$ uname -v
FreeBSD 9.0-CURRENT #0 r223017: Sun Jun 12 13:55:34 CDT 2011
root at m6500.local:/usr/obj/usr/src/sys/GENERIC

....where r223017 is the current svn revision number from which my
system is compiled (kernel and userland).

For more options, see `man uname`.


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