Create Apache2 virtual host via bash

vhost.sh

#!/bin/bash

if [ $# -ne 5 ]; then
	printf "\n\nสวัสดี $USER คุณอาจต้องการความช่วยเหลือ:\n\n"
	cat /opt/kid/help.txt
	printf "\n"
	exit
fi

POSITIONAL=()
while [[ $# -gt 0 ]]
do
key="$1"

case $key in
    -n|--name)
    NAME="$2"
    shift # past argument
    shift # past value
    ;;
    -r|--root)
    ROOTDIR="$2"
    shift # past argument
    shift # past value
    ;;
    *)    # unknown option
    POSITIONAL+=("$1") # save it in an array for later
    shift # past argument
    ;;
esac
done
set -- "${POSITIONAL[@]}" # restore positional parameters

echo VHost name  = "${NAME}"
echo Root directory     = "${ROOTDIR}"

cd /etc/apache2/sites-available
sudo cp example.conf $NAME.conf
sudo sed -i "s,/var/www/example,/var/www/$ROOTDIR,g; s/example/$NAME/g" $NAME.conf
printf "Virtual host '$NAME' created.\n\n"
cat $NAME.conf
printf '\n\nMapping hostname...'
printf "\n\n# $NAME\n127.0.0.1 $NAME.local" | sudo tee -a /etc/hosts
printf '\n\nHostname mapped!\n'
sudo a2ensite $NAME
sudo service apache2 restart
echo Apache2 restarted!