This brief tutorial explains how to find the size of a directory in Linux operating systems. Finding the size of files and directories in graphical mode is very easy! All we have to do is just right click on the file or directory, and choose the properties option from the context menu. However, it is equally important to know how to find the size of a directory from CLI mode as well.
Find the size of a directory in Linux
We can find out the size of a directory using
'du' command in Linux and Unix-like operating systems. The
du command will estimate and summarize file and directory space usage.
For thos wondering,
du stands for disk usage.
The typical syntax of du command is given below:
du [OPTION]... [FILE] [directory]... du [OPTION]... --files0-from=F
Now, allow me to show you how to find directory size in Linux from command line using
du command with examples.
1. Display current directory size
'du' command without any options to display the size of the current directory and its sub-directories.
As you see in the above output,
du command displays the disk usage of my current directory along with its sub-directories.
2. Display size of a specific directory
To display a particular directory's size, for example ostechnix, run:
$ du ostechnix/
36252 ostechnix/Swami Vivekananda (Chicago Speech) 452 ostechnix/MultiCD/plugins 44 ostechnix/MultiCD/.git/hooks 4 ostechnix/MultiCD/.git/branches 1012 ostechnix/MultiCD/.git/objects/pack 4 ostechnix/MultiCD/.git/objects/info 1020 ostechnix/MultiCD/.git/objects 8 ostechnix/MultiCD/.git/logs/refs/heads 8 ostechnix/MultiCD/.git/logs/refs/remotes/origin 12 ostechnix/MultiCD/.git/logs/refs/remotes 24 ostechnix/MultiCD/.git/logs/refs 32 ostechnix/MultiCD/.git/logs 8 ostechnix/MultiCD/.git/refs/heads 4 ostechnix/MultiCD/.git/refs/tags 8 ostechnix/MultiCD/.git/refs/remotes/origin 12 ostechnix/MultiCD/.git/refs/remotes 28 ostechnix/MultiCD/.git/refs 8 ostechnix/MultiCD/.git/info 1168 ostechnix/MultiCD/.git 140 ostechnix/MultiCD/maps 2706504 ostechnix/MultiCD 2832056 ostechnix/
You can also display the size of multiple directories in one go like below:
$ du ~/Desktop/ ~/Downloads/
3. Display directory size in human-readable format
du displays the size in
bytes. We can also display the size in "human readable format" (i.e. auto-selecting the appropriate unit for each size), rather than the standard block size.
To do so, add
-h tag with
du command as shown below.
$ du -h ostechnix/
36M ostechnix/Swami Vivekananda (Chicago Speech) 452K ostechnix/MultiCD/plugins 44K ostechnix/MultiCD/.git/hooks 4.0K ostechnix/MultiCD/.git/branches 1012K ostechnix/MultiCD/.git/objects/pack 4.0K ostechnix/MultiCD/.git/objects/info 1020K ostechnix/MultiCD/.git/objects 8.0K ostechnix/MultiCD/.git/logs/refs/heads 8.0K ostechnix/MultiCD/.git/logs/refs/remotes/origin 12K ostechnix/MultiCD/.git/logs/refs/remotes 24K ostechnix/MultiCD/.git/logs/refs 32K ostechnix/MultiCD/.git/logs 8.0K ostechnix/MultiCD/.git/refs/heads 4.0K ostechnix/MultiCD/.git/refs/tags 8.0K ostechnix/MultiCD/.git/refs/remotes/origin 12K ostechnix/MultiCD/.git/refs/remotes 28K ostechnix/MultiCD/.git/refs 8.0K ostechnix/MultiCD/.git/info 1.2M ostechnix/MultiCD/.git 140K ostechnix/MultiCD/maps 2.6G ostechnix/MultiCD 2.8G ostechnix/
Now you see the size of the directories in Kilobytes, Megabytes and Gigabytes, which is very clear and easy to understand.
4. Display directory size in a specific format
We can also display the disk usage size only in KB, or MB, or GB.
To do so, use -k for kilobytes, -m for megabytes
$ du -k ostechnix/
$ du -m ostechnix/
5. Display grand total size of directories
We can display just the total human-readable size of the current working directory using
$ du -sh
-s flag indicates summary.
If you want to check the total disk space used by a particular directory, run:
$ du -sh ~/ostechnix
We can also display the size of multiple directories at once as shown below.
$ du -sh ~/Desktop ~/Downloads
To get the grand total of the combined directories in human-readable format, for example
~/Music, add -c flag:
$ du -chs ~/Desktop ~/Downloads ~/Music
-c refers the cumulative total.
4.0K /home/sk/Desktop 47G /home/sk/Downloads 3.9G /home/sk/Music 51G total
To display only the grand total of the given directory including all the sub-directories, use 'grep' command with
'du' command like below.
$ du -ch Downloads/ | grep total 47G total
6. Display sizes of a directory and subdirectories, up to N levels deep
A directory may contain large number of sub-directories. You may want to list the sizes of a directory and any subdirectories, only up to N levels deep.
The following command displays the human-readable sizes of the given directory and its sub-directories, up to 2 level deep:
$ du -h --max-depth=2 ~/Downloads
7. Sort directories based on size
To find out which sub-directories consume how much disk size and sort them by their size, use this command:
$ du -h --max-depth=1 | sort -hr
The largest sub-directories will be displayed on the top. You can increase the directory depth level by increasing the value of
8. Find the size of both files and directories
As you may noticed in the all above outputs,
du command only displayed the disk usage of directories. But, what about the files?
To display the disk usage of all items including files and directories, use -a flag.
$ du -ah ostechnix/
Now, you will see the disk usage of all files and folders in human readable format.
9. Exclude certian type of files
The following command will display the size of the current directory including its sub-directories, but it will exclude the size of all
$ du -ch --exclude='*.mp4' | grep total 6.4G total
Tip: Can we find the biggest or smallest directories/files? Of course, yes! Check the following guide.
For more details about
'du' command, check the man pages.
$ man du
In this guide, we looked at how to find the size of directory in Linux using
du command with examples. As you can see, getting folder or directory size in Linux is not a big deal.