$ sudo apt-get update
$ sudo apt-get install gkrellm-bfm 

gkrellm-bfm is installed in your system.

Make ensure the gkrellm-bfm package were installed using the commands given below,

$ sudo dpkg-query -l | grep gkrellm-bfm *

You will get with gkrellm-bfm package name, version, architecture and description in a table

gkrellm-bfm package basic information: