letsencrypt.sh software package provides ACME client implemented in Bash, 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 letsencrypt.sh
letsencrypt.sh is installed in your system.
Make ensure the letsencrypt.sh package were installed using the commands given below,
$ sudo dpkg-query -l | grep letsencrypt.sh *
You will get with letsencrypt.sh package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Miscellaneous |
| Package | letsencrypt.sh |
| Version | 0.2.0-4 |
| Description | ACME client implemented in Bash |
| Sub Section | misc |