$ sudo apt-get update
$ sudo apt-get install drupal6-mod-addtoany 

drupal6-mod-addtoany is installed in your system.

Make ensure the drupal6-mod-addtoany package were installed using the commands given below,

$ sudo dpkg-query -l | grep drupal6-mod-addtoany *

You will get with drupal6-mod-addtoany package name, version, architecture and description in a table

drupal6-mod-addtoany package basic information: