du - Displays a summary of disk usage
du [-a|-s] [-klrx] [directory...]
Interfaces documented on this reference page conform to industry standards as follows:
du: XPG4, XPG4-UNIX
Refer to the
reference page for more information
about industry standards and associated tags.
Displays disk use for each file. Without
does not report on files unless
explicitly names a file.
Displays only the grand total for each of the specified directories,
or for a file if used with
Displays block count in kilobytes (1024 bytes) instead of
multiples of 512 bytes.
[Compaq] Allocates blocks, in files with multiple links,
evenly among the links. By default, a file with two or more links is counted
Displays an error message when
an inaccessible directory, or an inaccessible file when used with
Displays information about only the specified file system.
For example, if you want to display information about only the root file
system, specify both the
option and the root file system
The path name of a directory to be examined. All subdirectories of directory are examined.
The du command gives the number of blocks in all directories (listed recursively) within each specified directory.
[Compaq] When the
option is specified,
reports the number of blocks in individual files. The block
count includes the indirect blocks of each file and is in 512-byte units,
independent of the cluster size used by the system. If no file or directory
name is provided, the
command uses the current directory.
If too many files are distinctly linked,
the excess files more than once.
The following exit values are returned:
An error occurred.
To display the disk usage of a directory tree and each of its subtrees, enter: du /u/fran
The following environment variables affect the execution of
Provides a default value for the internationalization variables
that are unset or null. If
is unset or null, the corresponding value from the default locale is used.
If any of the internationalization variables contain an invalid setting, the
utility behaves as if none of the variables had been defined.
If set to a non-empty string value, overrides the values of
all the other internationalization variables.
Determines the locale for the interpretation of sequences
of bytes of text data as characters (for example, single-byte as opposed to
multibyte characters in arguments).
Determines the locale for the format and contents of diagnostic
messages written to standard error.
Determines the location of message catalogues for the processing
Commands: df(1), ls(1), quot(8)
Functions: lseek(2), stat(2)