Steps for simple nginx .htpasswd auth - Ubuntu

Nginx Basic Auth Instructions - Ubuntu

 1. Get apache utils:
 
    sudo apt-get install apache2-utils
    
 2. Create .htpasswd file and make up a username (one-liner)
 
    sudo htpasswd -c /etc/nginx/.htpasswd exampleuser
    
 3. You will be prompted to enter a new password
 
 4. Copy & paste the following into your etc/nginx/sites-available/yoursite file
 
 server {
  listen       portnumber;
  server_name  ip_address;
  location / {
      root   /var/www/mywebsite.com;
      index  index.html index.htm;
      auth_basic "Restricted"; #For Basic Auth
      auth_basic_user_file /etc/nginx/.htpasswd;  #For Basic Auth # PATH to .htpasswd
  }
}

 5. Don't forget to activate your site by symlinking if you haven't already:
 
    sudo ln -s /etc/nginx/sites-available/yoursite /etc/nginx/sites-enabled/yoursite
 
 6. Restart nginx:
    
    sudo service nginc restart