Configure Odoo 8 subdomain filtering on a Linux VPS

Odoo in one of the most commonly used business applications at the moment. It can be configured to use sub-domain filtering so the users can run different Odoo databases on different sub-domains. This means you can have different Odoo website/application for different branch of your company. The Odoo sub-domain filtering is simple to configure, so if you have a Linux VPS with Odoo installed on it, you can follow this guide.