$ sudo apt-get update
$ sudo apt-get install monajat-screenlet 

monajat-screenlet is installed in your system.

Make ensure the monajat-screenlet package were installed using the commands given below,

$ sudo dpkg-query -l | grep monajat-screenlet *

You will get with monajat-screenlet package name, version, architecture and description in a table

monajat-screenlet package basic information: