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View disk space usage on Ubuntu

A while ago a disk of one of our DigitalOcean droplets had almost no free space. Ncdu (NCurses Disk Usage) is a command line tool to view and analyse disk space usage on Ubuntu. It can be installed with this command:
sudo apt-get install ncdu

Once it has been installed it can be launched by simply typing ncdu in the terminal. After it has done it’s initial indexing you’ll see a screen not unlike this one:

Screen Shot 2015-08-10 at 18.43.49The arrow and enter keys can be used to navigate the file listing.

Using ncdu I quickly found a few big directories and could free up some space.

Bonus tip: when my mac complains about a full disk, GrandPerspective is my weapon of choice to hunt down big files and directories.

Freek Van der Herten is a partner and developer at Spatie, an Antwerp based company that specializes in creating web apps with Laravel. After hours he writes about modern PHP and Laravel on this blog. When not coding he’s probably rehearsing with his kraut rock band. He loves waffles and butterflies.
  • Juukie14

    Great tips!

  • Abhimanyu Sharma

    Thanks for great tip, but default `df -h` also works perfectly well.