cu software package provides call up another system, 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 cu
cu is installed in your system.
Make ensure the cu package were installed using the commands given below,
$ sudo dpkg-query -l | grep cu *
You will get with cu package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Communication Programs |
| Package | cu |
| Version | 1.07-23 |
| Description | call up another system |
| Sub Section | comm |