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28 .\" @(#)du.1 8.2 (Berkeley) 4/1/94
36 .Nd display disk usage statistics
42 .Op Fl a | s | d Ar depth
50 utility displays the file system block usage for each file argument
51 and for each directory in the file hierarchy rooted in each directory
53 If no file is specified, the block usage of the hierarchy rooted in
54 the current directory is displayed.
56 The options are as follows:
57 .Bl -tag -width indent
59 Display the apparent size instead of the disk usage.
60 This can be helpful when operating on compressed volumes or sparse files.
62 Calculate block counts in
65 This is different from the
71 and gives an estimate of how much space the examined file hierarchy would
72 require on a filesystem with the given
78 is rounded up to the next multiple of 512.
80 Symbolic links on the command line are followed, symbolic links in file
81 hierarchies are not followed.
83 Ignore files and directories matching the specified
86 Symbolic links on the command line and in file hierarchies are followed.
88 No symbolic links are followed.
91 Display an entry for each file in a file hierarchy.
93 Display a grand total.
95 Display an entry for all files and directories
99 Display block counts in 1073741824-byte (1 GiB) blocks.
103 Use unit suffixes: Byte, Kilobyte, Megabyte,
104 Gigabyte, Terabyte and Petabyte.
106 Display block counts in 1024-byte (1 kiB) blocks.
108 If a file has multiple hard links, count its size multiple times.
109 The default behavior of
111 is to count files with multiple hard links only once.
114 option is specified, the hard link checks are disabled, and these files
115 are counted (and displayed) as many times as they are found.
117 Display block counts in 1048576-byte (1 MiB) blocks.
119 Ignore files and directories with user
125 Generate messages about directories that cannot be read, files
126 that cannot be opened, and so on.
127 This is the default case.
128 This option exists solely for conformance with
131 Display an entry for each specified file.
134 .It Fl t Ar threshold
135 Display only entries for which size exceeds
139 is negative, display only entries for which size is less than the absolute
143 File system mount points are not traversed.
148 utility counts the storage used by symbolic links and not the files they
158 option is specified, storage used by any symbolic links which are
159 followed is not counted (or displayed).
165 options override each other and the command's actions are determined
166 by the last one specified.
172 options all override each other; the last one specified determines
173 the block counts used.
175 .Bl -tag -width BLOCKSIZE
177 If the environment variable
183 options are not specified, the block counts will be displayed in units of
191 options are not specified, the block counts will be displayed in 512-byte