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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
72 and gives an estimate of how much space the examined file hierarchy would
73 require on a filesystem with the given
79 is rounded up to the next multiple of 512.
81 Symbolic links on the command line are followed, symbolic links in file
82 hierarchies are not followed.
84 Ignore files and directories matching the specified
87 Symbolic links on the command line and in file hierarchies are followed.
89 No symbolic links are followed.
92 Display an entry for each file in a file hierarchy.
94 Display a grand total.
96 Display an entry for all files and directories
100 Display block counts in 1073741824-byte (1 GiB) blocks.
104 Use unit suffixes: Byte, Kilobyte, Megabyte,
105 Gigabyte, Terabyte and Petabyte based on powers of 1024.
107 Display block counts in 1024-byte (1 kiB) blocks.
109 If a file has multiple hard links, count its size multiple times.
110 The default behavior of
112 is to count files with multiple hard links only once.
115 option is specified, the hard link checks are disabled, and these files
116 are counted (and displayed) as many times as they are found.
118 Display block counts in 1048576-byte (1 MiB) blocks.
120 Ignore files and directories with user
126 Generate messages about directories that cannot be read, files
127 that cannot be opened, and so on.
128 This is the default case.
129 This option exists solely for conformance with
132 Display an entry for each specified file.
138 Use unit suffixes: Byte, Kilobyte, Megabyte,
139 Gigabyte, Terabyte and Petabyte based on powers of 1000.
140 .It Fl t Ar threshold
141 Display only entries for which size exceeds
145 is negative, display only entries for which size is less than the absolute
149 File system mount points are not traversed.
154 utility counts the storage used by symbolic links and not the files they
164 option is specified, storage used by any symbolic links which are
165 followed is not counted (or displayed).
171 options override each other and the command's actions are determined
172 by the last one specified.
178 options all override each other; the last one specified determines
179 the block counts used.
181 .Bl -tag -width BLOCKSIZE
183 If the environment variable
189 options are not specified, the block counts will be displayed in units of
197 options are not specified, the block counts will be displayed in 512-byte
201 Show disk usage for all files in the current directory.
202 Output is in human-readable form:
206 Summarize disk usage in the current directory:
210 Summarize disk usage for a specific directory:
214 Show name and size of all C files in a specific directory.
215 Also display a grand total at the end:
217 .Dl # du -ch /usr/src/sys/kern/*.c
227 utility is compliant with the
235 environment variable,
236 are extensions to that specification.
240 is accepted but ignored, for compatibility with systems implementing
251 options first appeared in
256 option first appeared in
258 and is available since
264 options first appeared in
274 options first appeared in the GNU fileutils;
285 option first appeared in