$ sudo apt-get update
$ sudo apt-get install libfriends-gtk0 

libfriends-gtk0 is installed in your system.

Make ensure the libfriends-gtk0 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libfriends-gtk0 *

You will get with libfriends-gtk0 package name, version, architecture and description in a table

libfriends-gtk0 package basic information: