How to uninstall or remove gkrellm-reminder software package from Ubuntu 16.04 LTS (Xenial Xerus)

You can uninstall or removes an installed gkrellm-reminder package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,

$ sudo apt-get remove gkrellm-reminder

Uninstall gkrellm-reminder including dependent package

If you would like to remove gkrellm-reminder and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove gkrellm-reminder

Use Purging gkrellm-reminder

If you use with purge options to gkrellm-reminder package all the configuration and dependent packages will be removed.

$ sudo apt-get purge gkrellm-reminder

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove gkrellm-reminder