User directive error

[Palvelin Postmaster]

> On 25 Jan 2019, at 03:50, Zhang Chao <zchao1995 at gmail.com> wrote:
> 
> Hello!
> 
> > Why does this error occur (Ubuntu 18.04/nginx 1.14.0)? 
> >
> > nginx.conf:21 
> > user www-data; 
> >
> > error.log 
> > 2019/01/24 19:07:07 [warn] 3526#3526: the "user" directive makes sense only if the master process runs with super-
> > user privileges, ignored in /etc/nginx/nginx.conf:21 
> > 
> > # ps -axu |grep nginx 
> > root 3439 0.0 0.2 360156 9352 ? Ss  19:07  0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process > on; 
> > www-data 3441 0.1 0.5 364044 20716 ? S  19:07  0:00 nginx: worker process 
> > www-data 3442 0.2 0.5 364560 21248 ? S  19:07  0:00 nginx: worker process 
> > www-data 3443 0.0 0.3 362456 14852 ? S  19:07  0:00 nginx: cache manager process 
> 
> The error message is self explaining, your master process should be run with
> the superuser privileges then you can specify workers’ user.

Can you tell from my ps command output above what privileges my master process is running with now?