What's eating your disk space? | Purple Computing
IT and Cyber Security. Using Terminal to find out what's eating your disk space.

How To: Using Terminal to find out what’s eating your disk space


You can use Terminal as a quick way to find out what specifically is taking up disk space on your hard disk (other solutions such as DaisyDisk are available but require you to download, install and sometimes purchase).

  1. Open Terminal
  2. At the prompt type the following:  cd /
  3. Press return. Your Terminal is now at the top level of the hard disk.
  4. Type the following followed by return:   du -h -d2

This command runs a du (disk usage) command with -h (human readable output) and goes down -d2 (two folder levels down).

You will now see a list of every folder from the top of the disk and down 2 folder levels, with the size of each folder denoted in K,M,G or T (for kilobytes, megabytes, gigabytes or terabytes).

Each folder will also show its total size calculated at the bottom of each section of results.

Variations:

You can use “cd” to navigate to a different starting point, for example you might only be interested in what’s taking up all the space in your own ~/Documents folder.

You can also use something like:  du -h -d1  to only look at the current level, or -d3 to go 3 levels down instead.

Common Culprits:

The ~/Library folder for a given user is often quite large due to the email cache.

Likewise /Applications and ~/Downloads are common sources of data.

Generally speaking, the bulk of data on a computer is going to be within the User folders located at /Users

Real-Time Feedback

When we solve a support ticket, clients are given the choice of leaving good or bad feedback along with an optional comment. We post the 10 most recent comments here automatically and in real-time. You can view even more on our page.

Date Name Comments
Jul 30th Sally & Quick and efficient as ever!
Jul 21st Charlotte B Really helpful as always. Thanks
Jul 16th Lynn H A big thank you again fro sorting out the access issues. 5* service. Many thanks again Lynn Hemmings MEP
Jul 14th Elena C Very speedy response - excellent
Jul 12th Lynn H Excellent . Great Service. Tas Books fixed. All up and running.
Jul 9th Lynn H Dean has worked really hard to get us up and running again. I am so grateful. Just as an update. I have chased corporate again today to get some dates when we might migrate onto a new system. Don't hold your breath. Big Big thanks to Dean. Over and above. Greta member of your team. 👍🤞 Fingers crossed it will continue working for a bit.
Jul 2nd Charlotte B Really helpful team effort - much appreciated.
Jun 29th Lynn H Really prompt service 5*******
Jun 25th John H Thank you for the help with my spaming!
Jun 18th Val W brilliant thank you