Gksu in 14.04?

[Chris]

On Wed, 2014-08-06 at 11:05 -0700, MR ZenWiz wrote:
> On Wed, Aug 6, 2014 at 10:59 AM, MR ZenWiz <mrzenwiz at gmail.com> wrote:
> > On Wed, Aug 6, 2014 at 10:10 AM, Tom H <tomh0665 at gmail.com> wrote:
> > :
> >> gksu/gksudo is abandonware upstream and pkexec is the replacement.
> >>
> >
> > Thank you.
> 
> PS: It would have been really handy to have this listed in the release notes....
> 

Since I'm still new to Ubuntu I'd been using gksudo as advised when I
first installed it a few weeks ago. Tried just now using 'pkexec' and
got this:

chris at localhost:~$ pkexec nautilus
error: XDG_RUNTIME_DIR not set in the environment.

(nautilus:4694): Gtk-WARNING **: cannot open display: 

What needs to be done to fix this issue?

Chris

-- 
Chris
31.11°N 97.89°W (Elev. 1092 ft)
13:13:57 up 13:34, 2 users, load average: 0.22, 0.67, 0.63
Ubuntu 14.04 LTS, kernel 3.13.0-32-generic