Doctl is a command-line tool available to manage DigitalOcean services. DigitalOcean shortly termed as DO includes a number of server and cloud-based services and data centers worldwide. A few of the services from DigitalOcean is Shared Web hosting, Managed Kubernetes, managed databases, cloud firewall, Load Balancers, Floating IPs, API & CLI developer tools, and a lot more. Install Doctl on Ubuntu, and Ubuntu-based Distros using the above Video Tutorial
For installation Command and to get to know more about Doctl, Check out the following link.