Install, Setup Nginx on Debian / Ubuntu 18.04

 Install Nginx on Ubuntu 16.04 

Run Following commands on Terminal 

$sudo apt-get update

$sudo apt-get install nginx

Adjust the Firewall

We can list the applications configurations that ufw knows how to work with by typing:

$sudo ufw app list

You should get a listing of the application profiles:

Output
Available applications: 
 Nginx Full  
 Nginx HTTP  
 Nginx HTTPS  
 OpenSSH

You can enable this by typing:

$ sudo ufw allow 'Nginx HTTP'

$ sudo ufw status

Check your Web Server

$ systemctl status nginx

When you have your server's IP address or domain, enter it into your browser's address bar:

http://server_domain_or_IP

You should see the default Nginx landing page, which should look something like this:

Manage the Nginx Process

$ sudo systemctl stop nginx

$ sudo systemctl start nginx

$ sudo systemctl restart nginx

$ sudo systemctl reload nginx

$ sudo systemctl disable nginx

$ sudo systemctl enable nginx