$ sudo apt-get update
$ sudo apt-get install gem-plugin-gmerlin 

gem-plugin-gmerlin is installed in your system.

Make ensure the gem-plugin-gmerlin package were installed using the commands given below,

$ sudo dpkg-query -l | grep gem-plugin-gmerlin *

You will get with gem-plugin-gmerlin package name, version, architecture and description in a table

gem-plugin-gmerlin package basic information: