$ sudo apt-get update
$ sudo apt-get install ichthux-emoticons 

ichthux-emoticons is installed in your system.

Make ensure the ichthux-emoticons package were installed using the commands given below,

$ sudo dpkg-query -l | grep ichthux-emoticons *

You will get with ichthux-emoticons package name, version, architecture and description in a table

ichthux-emoticons package basic information: