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NetBSD 6.1.5 - man page for du (netbsd section 1)

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DU(1)				   BSD General Commands Manual				    DU(1)

NAME
     du -- display disk usage statistics

SYNOPSIS
     du [-H | -L | -P] [-a | -d depth | -s] [-cghkmnrx] [file ...]

DESCRIPTION
     The du utility displays the file system block usage for each file argument and for each
     directory in the file hierarchy rooted in each directory argument.  If no file is specified,
     the block usage of the hierarchy rooted in the current directory is displayed.

     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" for-
	     mat.  Use unit suffixes: B (Byte), K (Kilobyte), M (Megabyte), G (Gigabyte), T (Ter-
	     abyte) and P (Petabyte).

     -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 num-
	     ber 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 speci-
     fied.

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

ENVIRONMENT
     BLOCKSIZE	If the environment variable BLOCKSIZE is set, and the -g, -h, -k, and -m options
		are not specified, the block counts will be displayed in units of that size
		block.

SEE ALSO
     df(1), chflags(2), fts(3), getbsize(3), symlink(7), quot(8)

HISTORY
     A du command appeared in Version 6 AT&T UNIX.

BSD					September 24, 2006				      BSD
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