“configuration file /etc/nginx/nginx.conf test failed”: How do I know why this happened?

Question

I\'m an nginx noob trying out this this tutorial on nginx 1.1.19 on ubuntu 12.04. I have this nginx config file.

When I run this command the test fails:

Answer 1

This particular commands worked for me. sudo apt-get remove --purge nginx nginx-full nginx-common

and sudo apt-get install nginx

credit to this answer on stackexchnage