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`MANWIDTH=100 man du | col -bx` on macOS 10.15.4 (19E266)
DU(1) BSD General Commands Manual DU(1)
NAME
du -- display disk usage statistics
SYNOPSIS
du [-H | -L | -P] [-a | -s | -d depth] [-c] [-h | -k | -m | -g] [-x] [-I mask]
[file ...]
DESCRIPTION
The du utility displays the file system block usage for each file argument and for
each directory in the file hierarchy rooted in each directory argument. If no file
is specified, the block usage of the hierarchy rooted in the current directory is
displayed.
The options are as follows:
-a Display an entry for each file in a file hierarchy.
-c Display a grand total.
-d depth
Display an entry for all files and directories depth directories deep.
-H Symbolic links on the command line are followed, symbolic links in file hier-
archies are not followed.
-h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Giga-
byte, Terabyte and Petabyte.
-I mask
Ignore files and directories matching the specified mask.
-g Display block counts in 1073741824-byte (1-Gbyte) blocks.
-k Display block counts in 1024-byte (1-Kbyte) blocks.
-L Symbolic links on the command line and in file hierarchies are followed.
-m Display block counts in 1048576-byte (1-Mbyte) blocks.
-P No symbolic links are followed. This is the default.
-r Generate messages about directories that cannot be read, files that cannot be
opened, and so on. This is the default case. This option exists solely for
conformance with X/Open Portability Guide Issue 4 (``XPG4'').
-s Display an entry for each specified file. (Equivalent to -d 0)
-x File system mount points are not traversed.
The du utility counts the storage used by symbolic links and not the files they ref-
erence unless the -H or -L option is specified. If either the -H or -L options are
specified, storage used by any symbolic links which are followed is not counted or
displayed. If more than one of the -H, -L, and -P options is specified, the last one
given is used.
Files having multiple hard links are counted (and displayed) a single time per du
execution. Directories having multiple hard links (typically Time Machine backups)
are counted a single time per du execution.
ENVIRONMENT
BLOCKSIZE If the environment variable BLOCKSIZE is set, and the -k option is not
specified, the block counts will be displayed in units of that size block.
If BLOCKSIZE is not set, and the -k option is not specified, the block
counts will be displayed in 512-byte blocks.
LEGACY DESCRIPTION
In legacy mode, only one of the -H, -L, or -P options may be specified.
The command will detect and report a SYMLOOP error (loop involving symbolic links).
In legacy mode, this is not the case.
For more information about legacy mode, see compat(5).
SEE ALSO
df(1), fts(3), compat(5), symlink(7), quot(8)
HISTORY
A du command appeared in Version 1 AT&T UNIX.
BSD June 2, 2004 BSD
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