$ sudo apt-get update
$ sudo apt-get install fonts-linuxlibertine 

fonts-linuxlibertine is installed in your system.

Make ensure the fonts-linuxlibertine package were installed using the commands given below,

$ sudo dpkg-query -l | grep fonts-linuxlibertine *

You will get with fonts-linuxlibertine package name, version, architecture and description in a table

fonts-linuxlibertine package basic information: