Apache Virtual host for hosting a website

First you need to install the Apache server in your server.

Then navigate to /var/www folder and create 

sudo mkdir -p /var/www/example.com/

This will create a folder for our site example.com. Next we have to grant the permission to created folder.

sudo chown -R $USER:$USER /var/www/example.com/
sudo chmod -R 755 /var/www

Then we need to put our website files in that created example.com folder. After that we need to create a configuration file for that. 

sudo cp /etc/apache2/sites-available/000-default.conf   /etc/apache2/sites-available/example.com.conf

Inside the cofiguration file we need to create something like this. 

<VirtualHost *:80>
    ServerAdmin admin@example.com
    ServerName example.com
    ServerAlias www.example.com
    DocumentRoot /var/www/example.com/public_html
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Some of the parts may already created so you don't need to create everything. Just make sure you will have a configuration file like this. 

To enable the created configuration file you need to enter following command.

sudo a2ensite example.com.conf

After that you need to enter this command to activate.

sudo service apache2 restart