bash script - apache, vhost, website

a2createsite.sh

#!/bin/bash

VHOST_CONF=/etc/apache2/sites-available/
ROOT_UID=0
NOTROOT=87
WWW_ROOT=/home/web/

# owner of the site directory
WEBUSER=web

# check if is root
if [ "$UID" -ne "$ROOT_UID" ]
then
	echo “You must be root to run this script.”
	exit $NOTROOT
fi

if [ -n "$1" ]
then
	DOMAIN=$1
else
	echo "You must provide a full domain name for this site, i.e. ‘example.com’ "
	echo -n "Run this script like ./a2createsite example.com"
	exit
fi

# create document root site folder
su $WEBUSER -c "mkdir -p ${WWW_ROOT}www.$DOMAIN/httpdocs"

# vhost file content 
# rewrite mod must be enabled
CONF="<VirtualHost *:80>\n\nServerName www.$DOMAIN\nServerAlias $DOMAIN\nDocumentRoot ${WWW_ROOT}www.$DOMAIN/httpdocs\n\nRewriteEngine On\nRewriteCond %{HTTP_HOST} ^$DOMAIN\nRewriteRule ^(.*)$ http://www.$DOMAIN\$1 [R=permanent,L]\n\n<Directory ${WWW_ROOT}www.$DOMAIN/httpdocs>\n\tOrder Deny,Allow\n\tAllow from all\n\tOptions -Indexes\n</Directory>\n\n</VirtualHost>"

# write the vhost config file 
echo -e $CONF > ${VHOST_CONF}www.$DOMAIN

# enable site configuration
cd $VHOST_CONF
a2ensite www.$DOMAIN > /dev/null

echo "$DOMAIN was created. In 5 seconds your apache will be reloaded"
sleep 5

/etc/init.d/apache2 reload

echo "Done"
exit 0