gtk-update-icon-cache software package provides icon theme caching utility, 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 gtk-update-icon-cache
gtk-update-icon-cache is installed in your system.
Make ensure the gtk-update-icon-cache package were installed using the commands given below,
$ sudo dpkg-query -l | grep gtk-update-icon-cache *
You will get with gtk-update-icon-cache package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Miscellaneous |
| Package | gtk-update-icon-cache |
| Version | 3.20.9-1ubuntu2 |
| Description | icon theme caching utility |
| Sub Section | misc |