7 Best Apps to View Disk Usage in Linux

Linux desktops have many utilities to view disk usage. These utilities gives us information on what programs or files use large chunks of disk space. Here we show you some of the best apps to view disk usage in Linux.

Note: if you prefer command line tools, we have an extensive list of CLI tools to find large files in Linux.

1. Disk Usage Analyzer (Baobab)

Disk Usage Analyzer or Baobab is a GUI tool that comes preinstalled with many popular Linux distributions. If you are using the Gnome desktop environment, then Baobab is already preinstalled on your system.

In addition to local disk usage, Disk Usage Analyzer can also view remote disks mounted on your system. You can see the disk usage in a very intuitive spherical graph.

Disk Usage Analyzer is available in most distribution repositories. For Ubuntu-based distributions, use the following command to install Disk Usage Analyzer.

sudo apt update
sudo apt install baobab

If you are using a Fedora distribution, you should run the following command:

sudo dnf install baobab

If you would like to have a distribution independent Flatpak version, you can with the following command

flatpak install flathub org.gnome.baobab

Also read: How to Fix the “No Space Left on Device” Error on Linux

2. Filelight

Filelight is a GUI app made specially for KDE desktop environments. This is a cross-platform application made with Qt framework. If you are using Windows, you can also install this software on your system.

Filelight is mainly used to display disk usage in your device. It allows users to see specifically where their disk space is used. In addition to local storage, you can scan your remote storage (servers) using Filelight. The application looks very good, and you can set its color scheme to your liking.

You can navigate the filesystem using mouse clicks and find information about any files and folders when hovering on the storage graph. You can directly copy or paste a file inside the Filelight software using the context menu. This feature is very handy in some instances when you have to copy-paste iles from one location to another.

If you click on any directory, it will center the view there. You can launch an app by clicking on files to associate with that software/ app. Hit on the middle click to open files/directories with your file browser. If you want to see more details about your file structure, increase the window size. If you want to scan a directory during startup, you can specify it using the Filelight CLI. Just pass on your desired directory and Filelight will automatically scan your directory on startup.

For any Debian or Ubuntu derivatives, Filelight is present in your package repository. You can easily install it with this command:

sudo apt update
sudo apt install filelight

If you are using Fedora, you can install Filelight using the dnf package manager.

sudo dnf install filelight

3. Duc

Duc is a very powerful tool to inspect and visualize disk space. Duc is quite reliable for petabytes of data stored in your servers or home NAS. In every run, duc indexes all your file and folder sizes, then maintains a database of sizes of your files and directories of your filesystem. Therefore, you can create your own tool to query the data generated by duc or create beautiful storage graphs using duc.

Before we installing it, let’s install all the dependencies duc need to function properly. For Debian and Ubuntu based distributions:

sudo apt-get install libncursesw5-dev libcairo2-dev libpango1.0-dev build-essential

If you are using Fedora or Redhat Enterprise Linux, run

sudo yum install pango-devel cairo-devel tokyocabinet-devel

You can find duc in the official repositories of Debian and Ubuntu derivatives and can easily install duck with the following command.

sudo apt update
sudo apt install duc

If you are using another distribution, there is no official package available for your system, but you can install them by downloading the source files from GitHub. After downloading, extract the archive and go inside the extracted directory, then execute using the following to install duc in your system.

./configure
make
sudo make install

If you want to index the “/usr” directory, run:

duc index /usr

This command scans your “/usr” directory and stores all the indexes with file sizes in a database for future reference. You can now list all the files and directories under the “/usr/local” directory in a tree viewer by running the following command:

duc ls -Fg -R /usr/local

Start the graphical user interface and see the sunburst graph using the following command:

duc gui /usr

Also read: The Best Open Source Tools to Secure Your Linux Server

4. Xdiskusage

Xdiskusage is a user-friendly software that shows the large files in your filesystem. It first uses du under the hood to generate all the report, then uses the data to generate a nice-looking chart for the user. In short, you can call xdiskusage a GUI tool for du.

Xdiskusage is present in the Ubuntu software repository. If you are using any Ubuntu derivative, you can install the software by simply running the following commands.

sudo apt update
sudo apt install xdiskusage

If you are using another distribution, you have to download the executable from the official website and install it manually.

When you first open the application, you can see a list of filesystems connected to your device. If you click one of one, a detailed storage graph will be generated by the xdiskusage tool.

Also read: SELinux vs AppArmor: What Are the Differences and Which One Should You Use?

5. JDiskReport

Jdiskreport helps the user learn how much storage is used on their disk and gives information about old files that are no longer used. It generates a variety of data points related to your filesystem. You can view all your filesystem-related information in the same window using Jdiskreport software.

This is a cross-platform tool that requires Java to run on your device. You can download the latest version of the software from its official website.

If you don’t have Java installed on your computer, you can install it with the following code:

sudo apt update
sudo apt install default-jre

6. Qdirstat

Qdirstat is a Qt-based application that scans and analyzes your filesystem. Qdirstat displays very important information about which files and folders consume the most device storage. You can easily identify and delete them after they’re identified.

This application is a Qt-only port of the old KDirStat application. While the older application has some dependency on the KDE desktop environment, this new Qdirapp application can run anywhere you want and is not tied to the KDE desktop.

Unlike other options, the Qdirstat application comes with a variety of new features. You can automatically clean up your system space with some predefined cleanup actions. You can easily categorize files with their MIME types to separate images from documents, documents from videos, etc.

This application is also capable of showing software packages and which application they belong to. Unlike other tools, Qdirstat can show you a histogram view of file sizes. You can also filter the files per age.

To install Qdirstat on your device, run the following commands.

sudo apt update
sudo apt install qdirstat

Also read: Basic Bash Commands for Linux Newbies

7. GDMap

You can see larger files with larger rectangles to easily differentiate the files that take up the most space.

GDMap is a lightweight GUI tool to show you which files consume your storage space. You can make a quick overview using the tree-map generated by GDMap software and tree-map any folder.

GD map is available in Ubuntu repositories and can be installed with the following command.

sudo apt update
sudo apt install gdmap

Also read: Top 12 Linux Distros to Pick From in 2024

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Hrishikesh Pathak

Developer and writer. Write about linux and web.