Viewing loader tunables in console

Kyle Evans kevans at
Wed May 13 16:13:17 UTC 2020

On Wed, May 13, 2020 at 10:54 AM Carl Johnson <carlj at> wrote:
> Ekalavya <ekalavya.bsd at> writes:
> > I know that sysctl tunables are viewable using the sysctl command, but
> > I am having trouble viewing loader tunables like
> > kern.vt.fb.default_mode. I need to know this before I start setting
> > values for them in my loader.conf file. How do I do this?
> I think that the kenv(1) command will list them.  I am not an expert, so
> anybody please correct me if this is wrong.

They will be in the kenv, but typically only if you've actually set
them in loader.conf. We don't (generally, there's probably
counter-examples) export those using default values to the kenv.


Kyle Evans

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