Ncdu

NCurses Disk Usage
DeveloperYoran Heling
ReleaseFebruary 21, 2007; 19 years ago (2007-02-21)
Stable release
2.9.2 Edit this on Wikidata / 24 October 2025; 12 months ago (24 October 2025)
Written inC (version 1.x), Zig (version 2.x)
Operating systemLinux, BSD, UNIX
PlatformPOSIX
TypeDisk utility
LicenseMIT License
Websitedev.yorhel.nl/ncdu
Repository

ncdu (NCurses Disk Usage) is a disk utility for Unix systems. Its name refers to its similar purpose to the du utility, but ncdu uses a text-based user interface under the [n]curses programming library. Users can navigate the list using the arrow keys and delete files that are taking up too much space by pressing the 'd' key. It provides a swift and efficient way to view directories that are taking up disk space, and was primarily meant for remote shells. It runs on UNIX-based systems, such as Linux, BSD, and POSIX. Users can install ncdu by running a package manager command in their terminal emulator (i.e. for Debian-based systems, apt install ncdu). Version 1.09 and later can export the file listing in JSON format.

ncdu was developed by Yoran Heling to learn C and to serve as a disk usage analyzer on remote systems over ssh. Version 2.0 of the program brought a full rewrite in the Zig programming language.

References

  1. ↑ "Ncdu Release History". dev.yorhel.nl. Archived from the original on 2022-03-07. Retrieved 2022-03-07.
  2. ↑ https://dev.yorhel.nl/ncdu/changes2. {{cite web}}: Missing or empty |title= (help)
  3. ↑ "Heitorlessa.com". www.heitorlessa.com. Archived from the original on 3 March 2016.
  4. ↑ "NCurses Disk Usage". dev.yorhel.nl. Retrieved 2025-12-13.
  5. ↑ "Ncdu | ANS Documentation". www.ans.co.uk. Retrieved 2025-12-13.
  6. ↑ "Ncdu 2: Less hungry and more Ziggy". dev.yorhel.nl. Archived from the original on 2022-10-18. Retrieved 2022-10-29.