du(1)                                                                 du(1)

NAME
     du - summarize disk usage

SYNOPSIS
     du [option ...] [name ...]

DESCRIPTION
     du outputs the amount of disk space used by directories, subdirec-
     tories, and ordinary files in blocks of 512 bytes.

OPTIONS
     No option specified:
          If name is a directory, du lists the space occupied by the speci-
          fied directory and all its subdirectories. The disk space occu-
          pied by ordinary files in the specified directory is included in
          the count, but not listed individually.

     -a   If name is a directory, du individually lists the space occupied
          by all the files in it and its subdirectories.

     -k   du outputs the amount of disk space in blocks of 1024 bytes.

     -r   If name designates a directory for which you do not have read
          permission, or a file that cannot be opened, du issues an error
          message.

          -r is always set implicitly and for reasons of compatibility is
          only available as an option.

     -s   du displays only the grand total of disk space used by the named
          file or subtree.

          -s must not be combined with -a.

     -x   If file is a directory, du only lists the space occupied by the
          subdirectories and files belonging to the same file system as
          file.

     --   If name begins with a dash (-), the end of the command-line
          options must be marked with --.

     name Name of the file or directory for which disk usage is to be
          displayed. A file with two or more links is only counted once. A
          file that has a hole in it (e.g. if only block 1 and block 100
          are used) will result in an incorrect block count.

          name not specified:

          The disk space occupied by the current directory and all its sub-
          directories is displayed.





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du(1)                                                                 du(1)

LOCALE
     The LCMESSAGES environment variable governs the language in which
     message texts are displayed. If LCMESSAGES is undefined or is defined
     as the null string, it defaults to the value of LANG. If LANG is like-
     wise undefined or null, the system acts as if it were not internation-
     alized.

     The LCALL environment variable governs the entire locale. LCALL
     takes precedence over all the other environment variables which affect
     internationalization.

EXAMPLES
     Example 1

     List the disk usage, in 512-byte blocks, of all subdirectories of the
     current directory whose names begin with DIR. The space occupied by
     ordinary files is included, but not listed individually.

     $ du DIR*
     6       DIR-1
     136     DIR-2/SUB-1
     140     DIR-2
     5       DIR-3
     54      DIR-4
     52      DIR-5

     Example 2

     List the disk usage, in 512-byte blocks, of all subdirectories of the
     current directory whose names begin with DIR. The disk usage of ordi-
     nary files is listed individually in this case because the -a option
     is used.

     $ du -a DIR*
     1       DIR-1/file1
     1       DIR-1/file2
     1       DIR-1/file3
     6       DIR-1
     0       DIR-2/file4
     1       DIR-2/file5
     34      DIR-2/SUB-1/file6
     99      DIR-2/SUB-1/file7
     136     DIR-2/SUB-1
     140     DIR-2
     1       DIR-3/file8
     1       DIR-3/file9
     5       DIR-3
     50      DIR-4/file10
     1       DIR-4/file10.bak
     54      DIR-4
     50      DIR-5/file11
     52      DIR-5


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du(1)                                                                 du(1)

SEE ALSO
     df(1), ls(1).




















































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