summarize disk usage
du [-sarkx] [name . . .]
The du command
gives the number of sectors (512 bytes) contained in all files
and (recursively) directories within each directory and
The block count includes the indirect blocks of the file.
If no names are given, the current directory is used.
A user with the appropriate privileges
is able to display information about all files and directories.
du has been multithreaded and uses the enhanced nftw (see
(walk a file tree) to increase its execution speed.
The optional arguments are as follows:
If neither -s or -a is specified, an output line
is generated for each directory only.
Give only the grand total (for each of the specified
Generate an output line for each file.
Give block count in kilobytes.
Cause block count returned to not follow symbolic links.
A file with two or more links is only counted once.
Generate messages about directories that cannot be
read, files that cannot be opened, and so on, rather than being silent
If POSIX2 is set, error messages are always reported (that is, the
command behaves as if the -r option is always specified).
du only reports disk usage of file
types that have backing store (for example,
regular, directory, and symbolic link files).
Other types of files (for example, pipes,
character special files, block special files),
will show a disk usage of zero bytes.
If the -a option is not used, non-directories
given as arguments are not listed.
If there are links between files in different directories
where the directories are on separate branches of the file
du counts the excess files more than once.
This command has been updated to handle files greater than 2GB.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004