du(1M) SYSTEM ADMINISTRATION COMMANDS 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 gen-
erated 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 argu-
ments 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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