1 .\" Copyright (c) 1990, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
12 .\" 3. All advertising materials mentioning features or use of this software
13 .\" must display the following acknowledgement:
14 .\" This product includes software developed by the University of
15 .\" California, Berkeley and its contributors.
16 .\" 4. Neither the name of the University nor the names of its contributors
17 .\" may be used to endorse or promote products derived from this software
18 .\" without specific prior written permission.
20 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 .\" @(#)du.1 8.2 (Berkeley) 4/1/94
40 .Nd display disk usage statistics
44 .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 Symbolic links on the command line are followed, symbolic links in file
64 hierarchies are not followed.
66 Symbolic links on the command line and in file hierarchies are followed.
68 Ignore files and directories matching the specified
71 No symbolic links are followed.
74 Display an entry for each file in a file hierarchy.
76 "Human-readable" output.
77 Use unit suffixes: Byte, Kilobyte, Megabyte,
78 Gigabyte, Terabyte and Petabyte.
80 Generate messages about directories that cannot be read, files
81 that cannot be opened, and so on.
82 This is the default case.
83 This option exists solely for conformance with
86 Display an entry for each specified file.
90 Display an entry for all files and directories
94 Display a grand total.
96 Display block counts in 1024-byte (1-Kbyte) blocks.
98 Display block counts in 1048576-byte (1-Mbyte) blocks.
100 Ignore files and directories with user
106 File system mount points are not traversed.
111 utility counts the storage used by symbolic links and not the files they
121 options are specified, storage used by any symbolic links which are
122 followed is not counted or displayed.
124 Files having multiple hard links are counted (and displayed) a single
129 .Bl -tag -width BLOCKSIZE
131 If the environment variable
135 option is not specified, the block counts will be displayed in units of that
141 option is not specified, the block counts will be displayed in 512-byte blocks.