Virtual Host in Ubuntu

 go to /etc/apache2/sites-available/

nano sitename.conf

copy- 

<VirutalHost *:80>

    ServerName example.com

    DocumentRoot /var/www/html/xxxx

</VirtualHost>

sudo a2ensite sitename

reload apache2

NGINX

sudo apt install certbot python3-certbot-nginx -y

 

sudo certbot --nginx -d yourdomain.com -d www.yourdomain.com