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28 .\" @(#)du.1 8.2 (Berkeley) 4/1/94
36 .Nd display disk usage statistics
41 .Op Fl a | s | d Ar depth | Fl t Ar threshold
44 .Op Fl h | k | m | B Ar blocksize
52 utility displays the file system block usage for each file argument
53 and for each directory in the file hierarchy rooted in each directory
55 If no file is specified, the block usage of the hierarchy rooted in
56 the current directory is displayed.
58 The options are as follows:
59 .Bl -tag -width indent
61 Display the apparent size instead of the disk usage.
62 This can be helpful when operating on compressed volumes or sparse files.
64 Calculate block counts in
67 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 Symbolic links on the command line and in file hierarchies are followed.
85 Ignore files and directories matching the specified
88 No symbolic links are followed.
91 Display an entry for each file in a file hierarchy.
93 "Human-readable" output.
94 Use unit suffixes: Byte, Kilobyte, Megabyte,
95 Gigabyte, Terabyte and Petabyte.
97 Generate messages about directories that cannot be read, files
98 that cannot be opened, and so on.
99 This is the default case.
100 This option exists solely for conformance with
103 Display an entry for each specified file.
106 .It Fl t Ar threshold
107 Display only entries for which size exceeds
111 is negative, display only entries for which size is less than the absolute
115 Display an entry for all files and directories
119 Display a grand total.
121 Display block counts in 1024-byte (1-Kbyte) blocks.
123 If a file has multiple hard links, count its size many times.
124 The default behavior of
126 is to count files with multiple hard links only once.
129 option is specified, the hard link checks are disabled, and these files
130 are counted (and displayed) as many times as they are found.
132 Display block counts in 1048576-byte (1-Mbyte) blocks.
134 Ignore files and directories with user
140 File system mount points are not traversed.
145 utility counts the storage used by symbolic links and not the files they
155 options are specified, storage used by any symbolic links which are
156 followed is not counted or displayed.
158 .Bl -tag -width BLOCKSIZE
160 If the environment variable
166 options are not specified, the block counts will be displayed in units of
174 options are not specified, the block counts will be displayed in 512-byte