gdmap software package provides Tool to visualize diskspace, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gdmap
gdmap is installed in your system.
Make ensure the gdmap package were installed using the commands given below,
$ sudo dpkg-query -l | grep gdmap *
You will get with gdmap package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Graphics |
| Package | gdmap |
| Version | 0.8.1-2 |
| Description | Tool to visualize diskspace |
| Sub Section | Graphics |