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In CentOS and Ubuntu, how do I find out how much free disk space I have left and other disk stats like disk usage?

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4 Answers 4

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63

Type the following command:

df -h

  • df: disk free
  • -h: makes the output human-readable
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  • best answer without the need to install additional software!
    – Patoshi パトシ
    Commented Feb 26, 2019 at 19:19
  • df stands for disk filesystem
    – Typo
    Commented Jan 31, 2020 at 20:42
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I covered this pretty extensively in a blog post titled: Command Line Tools for Analyzing Disk Usage on Fedora/CentOS/RHEL.

ncdu

It’s ncurses based, feature rich and has a nice clean interface and it works from within a shell.

        ss of ncdu

gt5

  • display diskspace used by files & directories within a directory
  • display what’s happened since the last ran (see screenshots below)
  • optionally provides links to the files, so you can also browse them
  • displays entries with their size & the percentage of their parent
  • ommits small files/directories
  • easy browsing using the cursor-keys
  • produces html files for browsing ‘offline’ afterwards

          ss of gt5

Disk Usage Analyzer (aka. Baobab)

  • Single folder scan
  • Remote scan
  • Monitoring of Home
  • Display Data in Treemaps or as Ringschart

      ss of baobab

others...

In particular fsview is a very nice GUI. I like how it organizes the disk usage visually. It’s actually a KDE application (a plugin to Konqueror) but runs just fine under GNOME. It’s typically part of a package called kdeaddons, and shows up in the Applications menu as “File System Viewer” under Accessories.

     ss of fsview

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  • Thanks, if anyone comes across additional tools please feel free to drop me a note, I'm always interested in finding other tools in this space!
    – slm ♦
    Commented Apr 27, 2013 at 16:44
  • @slm, may be you can add cdu as well over here. I have mentioned it in the other question's answer. unix.stackexchange.com/a/151684/47538
    – Ramesh
    Commented Aug 22, 2014 at 21:34
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    Thanks, I thought the konqueror plugin is forever dead, but there you found it!
    – dhill
    Commented Nov 27, 2014 at 11:19
  • @slm blog link is broken
    – Alexander Malakhov
    Commented Feb 15, 2016 at 7:43
  • k4dirstat is my preference, thx on the other options!
    – Aquarius Power
    Commented Jul 17, 2017 at 21:34
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There are a few commands you can use like df, du, and a few more. Just man a few commands to find out how to use them. If you still have a problem finding what you need after that just go to any directory and do this:

sudo du --max-depth=1 | sort -nr

You'll get something like:

2318764 ./usr
777036  ./var
328316  ./lib
222620  ./etc
86136   ./boot
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5

In Ubuntu dfc shows a coloured output of your mounted devices and is available via apt:

sudo apt-get install dfc

output like this: enter image description here

Unfortunately this is not available for CentOS as an rpm.

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  • this Q is asking about CentOS options, dfc is not in any RH repos for either CentOS or Fedora. I already checked this earlier today when I saw your Q showing it 8-). If you google for "dfc rpm" you'll see that no hits show up too. It's just not a popular app on either of these distros, hence my extensive list in my A.
    – slm ♦
    Commented Aug 23, 2014 at 0:19
  • But he asks"in centos and Ubuntu" but thanks for the hint I edited my answer
    – rubo77
    Commented Aug 23, 2014 at 6:02
  • Sorry, didn't notice the Ubuntu mention in the body, only the title.
    – slm ♦
    Commented Aug 23, 2014 at 6:08

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