apt-listdifferences software package provides source differences notification tool, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install apt-listdifferences
apt-listdifferences is installed in your system.
Make ensure the apt-listdifferences package were installed using the commands given below,
$ sudo dpkg-query -l | grep apt-listdifferences *
You will get with apt-listdifferences package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Utilities |
| Package | apt-listdifferences |
| Version | 1.20151115 |
| Description | source differences notification tool |
| Sub Section | Utils |