$ sudo apt-get update
$ sudo apt-get install ruby-coffee-script-source 

ruby-coffee-script-source is installed in your system.

Make ensure the ruby-coffee-script-source package were installed using the commands given below,

$ sudo dpkg-query -l | grep ruby-coffee-script-source *

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

ruby-coffee-script-source package basic information: