Table of Contents
ncdu - NCurses Disk Usage
Jun 2017
ncdu is an excellent way to look at disk space usage on a linux based system. Ncdu is a disk usage analyzer with an ncurses interface. It is designed to find space hogs on a remote server where you don't have an entire graphical setup available, but it is a useful tool even on regular desktop systems. Ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like environment with ncurses installed.
Installation
From the command line (you will need to have epel-releases installed, or you won't find the repositories).
yum install ncdu
Once installed you can launch the application from the command line using:
ncdu
Useage
Below is an example of ncdu running on a packager v8.
ncdu 1.12 ~ Use the arrow keys to navigate, press ? for help
--- /opt/mfvp ---------------------------------------------------------------------------------
13.6 GiB [##########] /mnt
108.7 MiB [ ] /packaging-dvr-recorder
106.8 MiB [ ] /packaging-playlist-generator
97.0 MiB [ ] /packaging-origin-server
75.0 MiB [ ] /packaging-asset-recorder
60.5 MiB [ ] /packaging-config
22.1 MiB [ ] /cleanup-agent
20.1 MiB [ ] /snmp
16.0 MiB [ ] /dispatcher
14.8 MiB [ ] /license-manager
8.1 MiB [ ] /statistic
76.0 KiB [ ] /packaging-server
28.0 KiB [ ] /packaging-controller
16.0 KiB [ ] /packaging-standalone
4.0 KiB [ ] /packaging
Total disk usage: 14.1 GiB Apparent size: 14.0 GiB Items: 52535
By using a combination of Enter and the arrow (cursor) keys you can navigate in and out of directories, in the example below I have navigated in to the /mnt/nas/sda3store directory, and I can see how much disk space the two services being packaged are consuming.
ncdu 1.12 ~ Use the arrow keys to navigate, press ? for help
--- /opt/mfvp/mnt/nas/sda3store ---------------------------------------------------------------
/..
6.9 GiB [##########] /service1
6.7 GiB [######### ] /service2
17.2 MiB [ ] initramfs-factory.img
4.0 MiB [ ] vmlinuz-factory
e 16.0 KiB [ ] /lost+found
e 4.0 KiB [ ] /TestService
Total disk usage: 13.6 GiB Apparent size: 13.6 GiB Items: 14903
Annoyingly, this program doesn't seem to give you information on total disk sizes, so you can't work out how much space is left.