$ sudo apt-get update
$ sudo apt-get install cl-clx-sbcl 

cl-clx-sbcl is installed in your system.

Make ensure the cl-clx-sbcl package were installed using the commands given below,

$ sudo dpkg-query -l | grep cl-clx-sbcl *

You will get with cl-clx-sbcl package name, version, architecture and description in a table

cl-clx-sbcl package basic information: