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32 .\" @(#)du.1 8.2 (Berkeley) 4/1/94
40 .Nd display disk usage statistics
46 .Op Fl a | s | d Ar depth
54 utility displays the file system block usage for each file argument
55 and for each directory in the file hierarchy rooted in each directory
57 If no file is specified, the block usage of the hierarchy rooted in
58 the current directory is displayed.
60 The options are as follows:
61 .Bl -tag -width indent
63 Display the apparent size instead of the disk usage.
64 This can be helpful when operating on compressed volumes or sparse files.
66 Calculate block counts in
69 This is different from the
75 and gives an estimate of how much space the examined file hierarchy would
76 require on a filesystem with the given
82 is rounded up to the next multiple of 512.
84 Symbolic links on the command line are followed, symbolic links in file
85 hierarchies are not followed.
87 Ignore files and directories matching the specified
90 Symbolic links on the command line and in file hierarchies are followed.
92 No symbolic links are followed.
95 Display an entry for each file in a file hierarchy.
97 Display a grand total.
99 Display an entry for all files and directories
105 Use unit suffixes: Byte, Kilobyte, Megabyte,
106 Gigabyte, Terabyte and Petabyte.
108 Display block counts in 1024-byte (1-Kbyte) blocks.
110 If a file has multiple hard links, count its size multiple times.
111 The default behavior of
113 is to count files with multiple hard links only once.
116 option is specified, the hard link checks are disabled, and these files
117 are counted (and displayed) as many times as they are found.
119 Display block counts in 1048576-byte (1-Mbyte) blocks.
121 Ignore files and directories with user
127 Generate messages about directories that cannot be read, files
128 that cannot be opened, and so on.
129 This is the default case.
130 This option exists solely for conformance with
133 Display an entry for each specified file.
136 .It Fl t Ar threshold
137 Display only entries for which size exceeds
141 is negative, display only entries for which size is less than the absolute
145 File system mount points are not traversed.
150 utility counts the storage used by symbolic links and not the files they
160 option is specified, storage used by any symbolic links which are
161 followed is not counted (or displayed).
167 options override each other and the command's actions are determined
168 by the last one specified.
174 options all override each other; the last one specified determines
175 the block counts used.
177 .Bl -tag -width BLOCKSIZE
179 If the environment variable
185 options are not specified, the block counts will be displayed in units of
193 options are not specified, the block counts will be displayed in 512-byte