du(1M) du(1M)
NAME
du - summarize disk usage
SYNOPSIS
du [-sar] [name ...]
DESCRIPTION
The du command reports the number of blocks contained in all files
and (recursively) directories within each directory and file
specified. The block count includes the indirect blocks of the file.
If no names are given, the current directory is used.
The optional arguments are as follows:
-s causes only the grand total (for each of the specified names)
to be given.
-a causes an output line to be generated for each file.
If neither -s or -a is specified, an output line is generated for
each directory only.
-r will cause du to generate messages about directories that
cannot be be read, files that cannot be opened, etc., rather
than being silent (the default).
A file with two or more links is only counted once.
NOTES
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 system hierarchy, du
will count the excess files more than once.
Files with holes in them will get an incorrect block count.
SEE ALSO
The ``File System Administration'' chapter in the System
Administrator's Guide.
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