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DU(1)                       General Commands Manual                      DU(1)

NAME
     du -- display disk usage statistics

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

DESCRIPTION
     The du utility displays the file system 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" 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.

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.

EXIT STATUS
     The du utility exits 0 on success, and >0 if an error occurs.

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.

NetBSD 7.1.2                     May 14, 2012                     NetBSD 7.1.2