coreutils software package provides GNU core utilities, 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 coreutils
coreutils is installed in your system.
Make ensure the coreutils package were installed using the commands given below,
$ sudo dpkg-query -l | grep coreutils *
You will get with coreutils package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Utilities |
| Package | coreutils |
| Version | 8.25-2ubuntu2 |
| Description | GNU core utilities |
| Sub Section | Utils |