$ sudo apt-get update
$ sudo apt-get install cl-umlisp-orf 

cl-umlisp-orf is installed in your system.

Make ensure the cl-umlisp-orf package were installed using the commands given below,

$ sudo dpkg-query -l | grep cl-umlisp-orf *

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

cl-umlisp-orf package basic information: