Polr is a free and open-source link shortener written in PHP and Lumen. It allows you to quickly host your own URL shortener. It's significant features include a management dashboard, detailed link analytics, and an API. This tutorial will guide you through the process of installing Polr on Ubuntu 18.04 LTS. This tutorial requires a Vultr Cloud Compute instance with Ubuntu 18.04 LTS and root access, as well as a valid domain name pointing to your server. Polr requires a web server, a MySQL......