Contents[Hide]

1. Name

du [man page] - estimate file space usage

2. Synopsis

du [OPTION]... [FILE]...
du [OPTION]... --files0-from=F

3. Frequently used options

-h, --human-readable print sizes in human readable 
format (e.g., 1K 234M 2G) 
-s, --summarize display only a total for 
each argument
--max-depth=N print the total for a directory 
(or file, with --all)
only if it is  N  or  fewer  levels
below  the  command   line   argument;
--max-depth=0 is the same as --summarize 

4. Examples

du is abbreviation of "disk usage". This command tool reports usage by given directory. Lets suppose that we have this directory structure in /tmp:

$ cd /tmp
$ mkdir -p dir1/dir2/dir3
$ tree dir1

du - create a example directories
By default du command traverse whole directory structure:

$ du dir1 

du command traverse whole directory structure
by option -s we instruct du command to print total just for given argument. In our case the argument is dir1.

$ du -s dir1 

instruct du command to print total
We can do the same by --max-depth=N:

$ du --max-depth=0 dir1 

du max-depth prefix Lets se how it works on /var directory:

# du -s /var 

du - print total for whole directory

# du --max-depth=1 /var 

du max-depth prefix 1
If its hard for you to read size in bytes you can instruct du to display size in human readable format:

# du -h --max-depth=1 /var 

du command in human readable format

Free Linux eBooks

Do you have the right skills?

Our IT Skills Watch page reflects an up to date IT skills demand leaning towards the Linux and Unix environment. We have considered a number of skills and operating systems.

See the result...

Linux Online Training

Learn to run Linux servers and prepare for LPI certification with Linux Academy. 104 available video lessons with PDF course notes with your own server!

Go to top