certbot software package provides automatically configure HTTPS using Let's Encrypt, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install certbot
certbot is installed in your system.
Make ensure the certbot package were installed using the commands given below,
$ sudo dpkg-query -l | grep certbot *
You will get with certbot package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Web Software |
| Package | certbot |
| Version | 0.8.1-2 |
| Description | automatically configure HTTPS using Let's Encrypt |
| Sub Section | web |