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NAME    [Toc]    [Back]

     du -- display disk usage statistics

SYNOPSIS    [Toc]    [Back]

     du [-H | -L | -P] [-I mask] [-a | -s | -d depth] [-c] [-h | -k] [-x]
	[file ...]

DESCRIPTION    [Toc]    [Back]

     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.  If the -k flag is specified,
 the number of 1024-byte blocks used by the file is displayed, otherwise
 getbsize(3) is used to determine the preferred block size.	Partial
 numbers of blocks are rounded up.

     The options are as follows:

     -H      Symbolic links on the command line are followed, symbolic links
	     in file hierarchies are not followed.

     -L      Symbolic links on the command line and in file hierarchies are

     -I mask
	     Ignore files and directories matching the specified mask.

     -P      No symbolic links are followed.  This is the default.

     -a      Display an entry for each file in a file hierarchy.

     -h      "Human-readable" output.  Use unit suffixes: Byte, Kilobyte,
	     Megabyte, Gigabyte, Terabyte and Petabyte

     -r      Generate messages about directories that cannot be read, files
	     that cannot be opened, and so on.	This is the default case.
	     This option exists solely for conformance with X/Open Portability
	     Guide Issue 4 (``XPG4'').

     -s      Display an entry for each specified file.	(Equivalent to -d 0)

     -d depth
	     Display an entry for all files and directories depth directories

     -c      Display a grand total.

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

     -x      File system mount points are not traversed.

     The du utility 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.

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

ENVIRONMENT    [Toc]    [Back]

     BLOCKSIZE	If the environment variable BLOCKSIZE is set, and the -k
		option is not specified, the block counts will be displayed in
		units of that size block.  If BLOCKSIZE is not set, and the -k
		option is not specified, the block counts will be displayed in
		512-byte blocks.

SEE ALSO    [Toc]    [Back]

     df(1), fts(3), symlink(7), quot(8)

HISTORY    [Toc]    [Back]

     A du command appeared in Version 1 AT&T UNIX.

FreeBSD 5.2.1			 April 1, 1994			 FreeBSD 5.2.1
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