$ sudo apt-get update
$ sudo apt-get install ruby-blockenspiel 

ruby-blockenspiel is installed in your system.

Make ensure the ruby-blockenspiel package were installed using the commands given below,

$ sudo dpkg-query -l | grep ruby-blockenspiel *

You will get with ruby-blockenspiel package name, version, architecture and description in a table

ruby-blockenspiel package basic information: