A few helper scripts for nginx. One of them creates a site and the other enables that new site.

createsite.sh

#!/bin/sh

if [ $# -ne 2 ]; then
        echo "Usage: $0 USER DOMAIN"
        exit 1
fi

if [ -d /var/www/$2 ]; then
        echo "$0: site '$2' already exists."
        exit 1
fi

mkdir /var/www/$2
chown -R $1:www-data /var/www/$2

mkdir /var/log/nginx/$2
chown -R $1:www-data /var/log/nginx/$2

mkdir -p /home/$1/domains/$2
ln -sf /var/www/$2 /home/$1/domains/$2/www
ln -sf /var/log/nginx/$2 /home/$1/domains/$2/logs

echo "
server {
        listen   80; ## listen for ipv4
        server_name  $2 *.$2;
        access_log  /var/log/nginx/$2/access.log;
        root /var/www/$2;
        index index.html index.htm index.php;
        #try_files $uri $uri/ /index.php?q=$uri&$args;

        location ~ \.php$ {
                include /etc/nginx/fastcgi_params;
                fastcgi_pass localhost:9000;
                fastcgi_index index.php;
        }
}
" > /etc/nginx/sites-available/$2

echo "$0: site '$2' created for user '$1'"

exit 0

enablesite.sh

#!/bin/sh

if [ $# -ne 1 ]; then
        echo "Usage: $0 DOMAIN"
        exit 1
fi

if [ -d /etc/nginx/sites-enabled/$1 ]; then
        echo "$0: site '$1' already exists."
        exit 1
fi

ln -s /etc/nginx/sites-available/$1 /etc/nginx/sites-enabled
/etc/init.d/nginx reload

echo "$0: site '$1' enabled."

exit 0