du(1) BSD General Commands Manual du(1)
du -- display disk usage statistics
du [-H | -L | -P] [-a | -s | -d depth] [-c] [-h | -k | -m | -g] [-x] [-I mask] [file ...]
The du utility displays the file system block usage for each file argu- ment and for each directory in the file hierarchy rooted in each direc- tory 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 hierarchies are not followed. -h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, 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 reference 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.
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.
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 sym- bolic links). In legacy mode, this is not the case. For more information about legacy mode, see compat(5).
A du command appeared in Version 1 AT&T UNIX. BSD June 2, 2004 BSD
Mac OS X 10.6 - Generated Thu Sep 17 20:07:30 CDT 2009