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33 .Nd display disk usage statistics
39 .Op Fl a | s | d Ar depth
47 utility displays the file system block usage for each file argument
48 and for each directory in the file hierarchy rooted in each directory
50 If no file is specified, the block usage of the hierarchy rooted in
51 the current directory is displayed.
53 The options are as follows:
54 .Bl -tag -width indent
56 Display the apparent size instead of the disk usage.
57 This can be helpful when operating on compressed volumes or sparse files.
59 Calculate block counts in
62 This is different from the
69 and gives an estimate of how much space the examined file hierarchy would
70 require on a filesystem with the given
76 is rounded up to the next multiple of 512.
78 Symbolic links on the command line are followed, symbolic links in file
79 hierarchies are not followed.
81 Ignore files and directories matching the specified
84 Symbolic links on the command line and in file hierarchies are followed.
86 No symbolic links are followed.
89 Display an entry for each file in a file hierarchy.
91 Display a grand total.
93 Display an entry for all files and directories
97 Display block counts in 1073741824-byte (1 GiB) blocks.
101 Use unit suffixes: Byte, Kilobyte, Megabyte,
102 Gigabyte, Terabyte and Petabyte based on powers of 1024.
104 Display block counts in 1024-byte (1 kiB) blocks.
106 If a file has multiple hard links, count its size multiple times.
107 The default behavior of
109 is to count files with multiple hard links only once.
112 option is specified, the hard link checks are disabled, and these files
113 are counted (and displayed) as many times as they are found.
115 Display block counts in 1048576-byte (1 MiB) blocks.
117 Ignore files and directories with user
123 Generate messages about directories that cannot be read, files
124 that cannot be opened, and so on.
125 This is the default case.
126 This option exists solely for conformance with
129 Display an entry for each specified file.
135 Use unit suffixes: Byte, Kilobyte, Megabyte,
136 Gigabyte, Terabyte and Petabyte based on powers of 1000.
137 .It Fl t Ar threshold
138 Display only entries for which size exceeds
142 is negative, display only entries for which size is less than the absolute
146 File system mount points are not traversed.
151 utility counts the storage used by symbolic links and not the files they
161 option is specified, storage used by any symbolic links which are
162 followed is not counted (or displayed).
168 options override each other and the command's actions are determined
169 by the last one specified.
175 options all override each other; the last one specified determines
176 the block counts used.
178 .Bl -tag -width BLOCKSIZE
180 If the environment variable
186 options are not specified, the block counts will be displayed in units of
194 options are not specified, the block counts will be displayed in 512-byte
198 Show disk usage for all files in the current directory.
199 Output is in human-readable form:
203 Summarize disk usage in the current directory:
207 Summarize disk usage for a specific directory:
211 Show name and size of all C files in a specific directory.
212 Also display a grand total at the end:
214 .Dl # du -ch /usr/src/sys/kern/*.c
224 utility is compliant with the
232 environment variable,
233 are extensions to that specification.
237 is accepted but ignored, for compatibility with systems implementing
248 options first appeared in
253 option first appeared in
255 and is available since
261 options first appeared in
271 options first appeared in the GNU fileutils;
282 option first appeared in