baobab software package provides GNOME disk usage analyzer, 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 baobab
baobab is installed in your system.
Make ensure the baobab package were installed using the commands given below,
$ sudo dpkg-query -l | grep baobab *
You will get with baobab package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | GNOME |
| Package | baobab |
| Version | 3.18.1-1ubuntu1 |
| Description | GNOME disk usage analyzer |
| Sub Section | GNOME |