How To Check Disk Space Usage With Ncdu Utility

Check Disk Space Usage With Ncdu Utility

In this tutorial, we will show you how to check disk space usage with ncdu utility on your Linux server. For those of you who didn’t know, Ncdu (NCurses Disk Usage)  is a command-line tool to view and analyze disk space usage on Linux. It can drill down into directories and report space used by individual directories. This way it is very easy to track down space-consuming files/directories.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation Ncdu on Linux systems.


  • A server running one of the following operating systems: CentOS Linux.
  • It’s recommended that you use a fresh OS install to prevent any potential issues.
  • SSH access to the server (or just open Terminal if you’re on a desktop).
  • A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Check Disk Space Usage With Ncdu Utility

Step 1. First, let’s start by ensuring your system is up-to-date.

sudo yum clean all
sudo yum install epel-release
sudo yum update

Step 2. Installing Ncdu on RHEL/CentOS.

Run the following commands to install Ncdu:

yum install ncdu -y

Check Disk Space Usage With Ncdu Utility

Step 3. Ncdu sample usage

To start  ncdu type the following command on your terminal:


Check Disk Space Usage With Ncdu Utility

To get more information on the selected directory press “i” button:

Check Disk Space Usage With Ncdu Utility

To see the help window with ncdu available options press  “Shift+?” key combination. You can use arrow keys to move up and down for more options.

Check Disk Space Usage With Ncdu Utility

For command-line options and other information, go through the man page of ncdu command.

If you are not satisfied with the standard du command and are looking for a fast, ncurses based du-like utility then try out ncdu. It provides lots of customization options. You’ll definitely like it.

Congratulations! You have successfully installed Ncdu. Thanks for using this tutorial for installing Ncdu on a Linux system. For additional help or useful information, we recommend you to check the official Ncdu website.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to idroot.us, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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