gtimer software package provides GTK-based X11 task timer, 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 gtimer
gtimer is installed in your system.
Make ensure the gtimer package were installed using the commands given below,
$ sudo dpkg-query -l | grep gtimer *
You will get with gtimer package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Utilities |
| Package | gtimer |
| Version | 2.0.0-1.2 |
| Description | GTK-based X11 task timer |
| Sub Section | Utils |