A shell script file to create a virtual host on apache server to host your website , just copy this script in your root directory of website and set the SERVER_IP,HOST_NAME variable in the file, change the executable permission and run it.This will automatically add your virtual-host and runs your website at a specified host name.

set_virtual_host.sh

#!/bin/bash
# Author : Akshay Pratap Singh
# Email-id : pratapakshay0@gmail.com

# These variable are sets by user
SERVER_IP="127.0.0.1"
HOST_NAME="example.com"

DIR_PATH=$(pwd)
APACHE_DIR_PATH="/etc/apache2/sites-available"

FILE_DATA=$(cat <<EOF
<VirtualHost *:80>
        ServerName ${HOST_NAME}
        ServerAlias www.${HOST_NAME}
        ServerAdmin webmaster@localhost
        DocumentRoot ${DIR_PATH}
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
        <Directory "${DIR_PATH}">
            Options Indexes FollowSymLinks MultiViews
            Order allow,deny
            Allow from all
            AllowOverride All
            # New directive needed in Apache 2.4.3:
            Require all granted
        </Directory>
</VirtualHost>
EOF
)


echo "Creating conf file...."
sudo touch ${APACHE_DIR_PATH}/${HOST_NAME}.conf
sudo chmod 777 ${APACHE_DIR_PATH}/${HOST_NAME}.conf
sudo echo "${FILE_DATA}" >> ${APACHE_DIR_PATH}/${HOST_NAME}.conf

echo "Setting virtualhost...."
sudo a2ensite ${HOST_NAME}.conf > /dev/null

echo "Setting new virtual-host...."
sudo cp /etc/hosts /etc/hosts.save
sudo chmod 777 /etc/hosts
sudo echo "${SERVER_IP}    ${HOST_NAME}" >> /etc/hosts

echo "Enabling Rewrite Mode...."
sudo a2enmod rewrite

echo "List of Apache Mode activated...."
sudo apache2ctl -M
echo

echo "Restarting apache2...."
sudo service apache2 restart > /dev/null

echo "All Done....!!!"
echo
echo "Goto http://$HOST_NAME , to check."