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DESCRIPTION

The options are as follows:

-H

Symbolic links on the command line are followed. (Symbolic links encountered in the tree traversal are not followed.)

-L

All symbolic links are followed.

-P

No symbolic links are followed.

-a

Display an entry for each file in the file hierarchy.

-c

Display the grand total after all the arguments have been processed.

-d

Display an entry files and directories depth directories deep.

-g

If the -g flag is specified, the number displayed is the number of gigabyte (1024*1024*1024 bytes) blocks.

-h

If the -h flag is specified, the numbers will be displayed in "human-readable" format. Use unit suffixes: B (Byte), K (Kilobyte), M (Megabyte), G (Gigabyte), T (Terabyte) and P (Petabyte).

-i

Output inode usage instead of blocks. All "human-readable" options are ignored.

-k

By default, du displays the number of blocks as returned by the stat(2) system call, i.e. 512-byte blocks. If the -k flag is specified, the number displayed is the number of kilobyte (1024 bytes) blocks. Partial numbers of blocks are rounded up.

-m

If the -m flag is specified, the number displayed is the number of megabyte (1024*1024 bytes) blocks.

-n

Ignore files and directories with user "nodump" flag (UF_NODUMP) set.

-r

Generate warning messages about directories that cannot be read. This is the default behaviour.

-s

Display only the grand total for the specified files.

-x

Filesystem mount points are not traversed.

du counts the storage used by symbolic links and not the files they reference unless the -H or -L option is specified. If either the -H or -L options are specified, storage used by any symbolic links which are followed is not counted or displayed. The -H, -L and -P options override each other and the command's actions are determined by the last one specified.

Files having multiple hard links are counted (and displayed) a single time per du execution.