Disk Usage Analyzer is a free software application that can help you check your disk usage on Ubuntu. It can show you how much space is used by your applications, files, and folders. You can also see how much space is used by the operating system itself. If you’re not familiar with Disk Usage Analyzer, it’s a great way to get an idea of how your Ubuntu system is using its storage resources. To use Disk Usage Analyzer, first open a terminal and type “diskusage” into the terminal window. This will start Disk Usage Analyzer and display the following information:

  • The size of your hard drive (in MB)
  • The size of your installed Ubuntu software (in MB)
  • The size of your swap file (in MB)

You’ll find the tool on your Accessories menu:

When you start the tool,  you have a choice of opening the filesystem or a particular folder. If you choose filesystem, you will have to wait for a while because it’s going through and checking all the files and folders on your system… but it’s worth the wait when you see the nice GUI in action:

Right click on anything in the tree, and you will see a list of options:

Open will obviously open that folder with Gnome’s file browser. List all files in folder will show you the list right in the tool.

The folder graphical map seems like a nice idea, but as of this howto, doesn’t look like it tells you the name of the file/folder in the map. I’m sure that will be resolved soon.

You can also delete files from within the tool, which is an added plus.

Tested on: Ubuntu Edgy Eft. (Tool may not exist on prior versions)