du man page

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DU(1)                   FreeBSD General Commands Manual                  DU(1)

NAME

     du -- display disk usage statistics

SYNOPSIS

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

DESCRIPTION

     The du utility displays the file system block usage for each file argu-
     ment and for each directory in the file hierarchy rooted in each direc-
     tory 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
             in file hierarchies are not followed.

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

     -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
             deep.

     -c      Display a grand total.

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

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

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

     -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

     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

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

HISTORY

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

FreeBSD 6.2                       May 6, 2006                      FreeBSD 6.2

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