How can I calculate the size of a directory?

How to know the size of a directory? Including subdirectories and files.

Asked By: Juanjo Conti

du -s directory_name

Or to get human readable output:

du -sh directory_name

The -s option means that it won’t list the size for each subdirectory, only the total size.

Answered By: sepp2k

you can also use ls -ldh:

ls -ldh /etc
drwxr-xr-x 145 root root 12K 2012-06-02 11:44 /etc

-l is for long listing ; -d is for displaying dir info, not the content of the dir, -h is for displaying size in huma readable format.

Answered By: fromnaboo

GNU du takes a -b option.

See the man page and the info page for more help:

-b, --bytes is equivalent to --apparent-size --block-size=1

Answered By: user2573436

I always install the “ncdu” package and see all the output of all directories with graphical representation.
This is because I usually need to know what’s taking up the most disk space on my machines, regardless of how much a single directory sums up.

Usage: sudo ncdu / (You do not need sudo for folders on which you have read permission).

It will take a while to scan disk usage statistics on the whole file system. It has a nice command line graphical representation and included keyboard navigation using the arrow keys, like going deeper or higher in the scanned path. You can also delete items by pressing D.

Answered By: Etescartz

While using a separate package such as ncdu may work well, the same comparison of many folders can be done, to some degree, by just giving du a list of folders to size up. For example to compare top-level directories on your system…

cd /    
sudo du -sh ./*
Answered By: NFlourish
du -csh

-c produces grand total

Answered By: Kalpesh Soni


du -hax --max-depth=1 / | grep '[0-9]G' | sort -nr

This helps find large directories to then sift through using du -sh ./*

Answered By: rollinjack

You can use “” from the awk Velour library:

ls -ARgo "$@" | awk '{q += $3} END {print q}'
Answered By: Zombo

du -hd1

will list in human-readable format the sizes of all the directories, e.g.

656K    ./rubberband
2.2M    ./lame
652K    ./pkg-config
Answered By: Boris Yakubchik

I tried with below command since already best answer has been provided

sudo find . -maxdepth 1 -exec du -shk {} ;| awk 'NR >1'| awk 'BEGIN{sum=1}{sum=sum+$1}END{print sum}'


 sudo find . -maxdepth 1 -exec du -shk {} ;| awk 'NR >1'| awk 'BEGIN{sum=1}{sum=sum+$1}END{print sum}'

Answered By: Praveen Kumar BS

The original question asked the size, but did not specify if it was the size on disk or the actual size of data.

I have found that the calculation of ‘du’ can vary between servers with the same size partition using the same file system. If file system characteristics differ this makes sense, but otherwise I can’t figure why. The ‘ls|awk” answer that Steven Penny gave yields a more consistent answer, but still gave me inconsistent results with very large file lists.

Using ‘find’ gave consistent results for 300,000+ files, even when comparing one server using XFS and another using EXT4. So if you want to know the total bytes of data in all files then I suggest this is a good way to get it:

find /whatever/path -type f -printf "%sn"|awk '{q+=$1} END {print q}'
Answered By: Angelo Babudro

du -ahd 1 | sort -h will have a better visualization that sorted the items.

$ du -ahd 1 | sort -h

2.1M    ./jinxing.oxps
2.1M    ./jx.xps
3.5M    ./instances_train2014_num10.json
5.9M    ./realsense
7.8M    ./html_ppt
8.5M    ./pytorch-segmentation-toolbox
24M ./bpycv
24M ./inventory-v4
26M ./gittry
65M ./inventory
291M    ./librealsense
466M    .
Answered By: Yang
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