I am trying to test the configuration of nginx on my machine and I read somewhere it’s bug and I have to do the following which I did:

  sudo mkdir /etc/systemd/system/nginx.service.d
  printf "[Service]nExecStartPost=/bin/sleep 0.1n" | 
  sudo tee /etc/systemd/system/nginx.service.d/override.conf
  sudo systemctl daemon-reload
  sudo systemctl restart nginx

Yet I get the same error still:

nginx: [warn] the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /etc/nginx/nginx.conf:1
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: [emerg] open() "/run/nginx.pid" failed (13: Permission denied)
nginx: configuration file /etc/nginx/nginx.conf test failed

How do I fix this please?

I am on a Linux Mate machine i5 with 16GB ram