du(1) [osx man page]
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 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 (typi- cally 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
Check Out this Related Man Page
du(1) General Commands Manual du(1) NAME
du - summarize disk usage SYNOPSIS
type] [name]... DESCRIPTION
The command gives the number of 512-byte blocks allocated for all files and (recursively) directories within each directory and file speci- fied by the name operands. The block count includes the indirect blocks of the file. A file with two or more links is counted only once. If name is missing, the current working directory is used. By default, generates an entry only for the name operands and each directory contained within those hierarchies. By default, when a symbolic link is encountered on the command line or in the file hierarchy, will count the size of the symbolic link rather than the file referenced by the link, and will not follow the link to another portion of the file hierarchy. Options The command recognizes the following options: Print entries for each file encountered in the directory hierarchies in addition to the normal output. For each name operand that is a directory for which file system swap has been enabled, print the number of blocks the swap system is currently using. If a symbolic link is specified on the command line, will count the size of the file or file hierarchy referenced by the link. Unlike the option, it will not follow sym- bolic links encountered during the traversal of the directory hierarchy. Gives the block count in 1024-byte blocks. If a symbolic link is specified on the command line or encountered during the traversal of a file hierarchy, will count the size of the file or file hierarchy referenced by the link. Print messages about directories that cannot be read, files that cannot be accessed, and so on. is normally silent about such conditions. Print only the grand total of disk usage for each of the specified name operands. Restrict reporting to file systems of the specified type. (Example values for type are and so on.) Multiple options can be specified. Disk usage is normally reported for the entire directory hierarchy below each of the given name operands. Restrict reporting to only those files that have the same device as the file specified by the name operand. Disk usage is normally reported for the entire directory hierarchy below each of the given name operands. According to the standards, specifying more than one of the mutually-exclusive options and will not be considered an error. The last option specified will determine the behavior of the utility. EXAMPLES
Display disk usage for the current working directory and all directories below it, generating error messages for unreadable directories: Display disk usage for the entire file system except for any or mounted file systems: Display disk usage for files on the root volume only. No usage statistics are collected for any other mounted file systems: WARNINGS
Block counts are incorrect for files that contain holes. SEE ALSO
df(1M), bdf(1M), quot(1M), standards(5). STANDARDS CONFORMANCE
du(1)