$ sudo apt-get update
$ sudo apt-get install compizconfig-backend-gconf 

compizconfig-backend-gconf is installed in your system.

Make ensure the compizconfig-backend-gconf package were installed using the commands given below,

$ sudo dpkg-query -l | grep compizconfig-backend-gconf *

You will get with compizconfig-backend-gconf package name, version, architecture and description in a table

compizconfig-backend-gconf package basic information: