du [file | directory ...]

• For each file specified, the du command displays the file system block usage.
  
  
• For each directory specified, the du command displays the file system block usage for all its sub-directories.
  
  
• If none is specified, the du command displays the file system block usage for all sub-directories of the current directory.
  

• Display the file system block usage for all files and directories:

  $ du -ah folder1/
   12K    folder1/
  4.0K    folder1//file1
  4.0K    folder1//file2
  4.0K    folder1//file3
    0B    folder1//folder2
    0B    folder1//folder2/folder3

  
  
• Display the file system block usage for all files and directories, excluding the specified directory from the list:

  $ du -h folder1/*
  4.0K    folder1//file1
  4.0K    folder1//file2
  4.0K    folder1//file3
    0B    folder1//folder2
    0B    folder1//folder2/folder3

  
  
• Display the file system block usage for all sub-directories of a directory:

  $ du -h folder1/
   12K    folder1/
    0B    folder1//folder2
    0B    folder1//folder2/folder3

  
  
• Display the file system block usage for sub-directories of a directory "n" directories deep:

  $ du -hd 1 folder1/
   12K    folder1/
    0B    folder1//folder2

  
  

The following options can be used:

-a
|For each directory specified, displays the file system block usage for the specified directory and all its files and sub-directories.

-d <depth>
|For each directory specified, displays the file system block usage for all its sub-directories <depth> directories deep.

-s
|Display the file system block usage for each specified file or directory.
|Equivalent to "-d 0"

-c
|Display the total of file system block usage of all listed files.

-h
|"Human-readable" output.
|Use unit suffixes: Byte (-b), Kilobyte (-k), Megabyte (-m), Gigabyte (-g).

-k
|Display block counts in 1024-byte (1-Kbyte) blocks.

-m
|Display block counts in 1048576-byte (1-Mbyte) blocks.

-g
|Display block counts in 1073741824-byte (1-Gbyte) blocks.