gkrellm-reminder software package provides useful reminder plugin for gkrellm, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gkrellm-reminder
gkrellm-reminder is installed in your system.
Make ensure the gkrellm-reminder package were installed using the commands given below,
$ sudo dpkg-query -l | grep gkrellm-reminder *
You will get with gkrellm-reminder package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | gkrellm-reminder |
| Version | 2.0.0-3 |
| Description | useful reminder plugin for gkrellm |
| Sub Section | X228 |