du
Options
--help- 
du-help-print-help
 --all,-a- 
du-help-all
 --apparent-size- 
du-help-apparent-size
 --block-size=<SIZE>,-B <SIZE>- 
du-help-block-size
 --bytes,-b- 
du-help-bytes
 --total,-c- 
du-help-total
 --max-depth=<N>,-d <N>- 
du-help-max-depth
 --human-readable,-h- 
du-help-human-readable
 --inodes- 
du-help-inodes
 -k- 
du-help-block-size-1k
 --count-links,-l- 
du-help-count-links
 --dereference,-L- 
du-help-dereference
 --dereference-args,-D,-H- 
du-help-dereference-args
 --no-dereference,-P- 
du-help-no-dereference
 -m- 
du-help-block-size-1m
 --null,-0- 
du-help-null
 --separate-dirs,-S- 
du-help-separate-dirs
 --summarize,-s- 
du-help-summarize
 --si- 
du-help-si
 --one-file-system,-x- 
du-help-one-file-system
 --threshold=<SIZE>,-t <SIZE>- 
du-help-threshold
 --verbose,-v- 
du-help-verbose
 --exclude=<PATTERN>- 
du-help-exclude
 --exclude-from=<FILE>,-X <FILE>- 
du-help-exclude-from
 --files0-from=<FILE>- 
du-help-files0-from
 --time=<WORD>- 
du-help-time
 --time-style=<STYLE>- 
du-help-time-style
 
Examples
List the sizes of a directory and any subdirectories, in the given unit (B/KiB/MiB):
du -{{b|k|m}} {{path/to/directory}}
List the sizes of a directory and any subdirectories, in human-readable form (i.e. auto-selecting the appropriate unit for each size):
du {{[-h|--human-readable]}} {{path/to/directory}}
Show the size of a single directory, in human-readable units:
du {{[-sh|--summarize --human-readable]}} {{path/to/directory}}
List the human-readable sizes of a directory and of all the files and directories within it:
du {{[-ah|--all --human-readable]}} {{path/to/directory}}
List the human-readable sizes of a directory and any subdirectories, up to N levels deep:
du {{[-h|--human-readable]}} {{[-d|--max-depth]}} N {{path/to/directory}}
List the human-readable size of all .jpg files in current directory, and show a cumulative total at the end:
du {{[-ch|--total --human-readable]}} {{./*.jpg}}
List all files and directories (including hidden ones) above a certain threshold size (useful for investigating what is actually taking up the space):
du {{[-ah|--all --human-readable]}} {{[-t|--threshold]}} {{1G|1024M|1048576K}} .[^.]* *
The examples are provided by the tldr-pages project under the CC BY 4.0 License.
Please note that, as uutils is a work in progress, some examples might fail.