gnome-raw-thumbnailer software package provides RAW file thumbnailer for GNOME, 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 gnome-raw-thumbnailer
gnome-raw-thumbnailer is installed in your system.
Make ensure the gnome-raw-thumbnailer package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnome-raw-thumbnailer *
You will get with gnome-raw-thumbnailer package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Graphics |
| Package | gnome-raw-thumbnailer |
| Version | 2.0.1-0ubuntu8 |
| Description | RAW file thumbnailer for GNOME |
| Sub Section | Graphics |