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28 .\" @(#)du.1 8.2 (Berkeley) 4/1/94
29 .\" $FreeBSD: src/usr.bin/du/du.1,v 1.15.2.9 2003/02/24 22:37:41 trhodes Exp $
30 .\" $DragonFly: src/usr.bin/du/du.1,v 1.2 2003/06/17 04:29:26 dillon Exp $
37 .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.
57 flag is specified, the number of 1024-byte
58 blocks used by the file is displayed, otherwise
60 is used to determine the preferred block size.
61 Partial numbers of blocks are rounded up.
63 The options are as follows:
64 .Bl -tag -width indent
66 Symbolic links on the command line are followed, symbolic links in file
67 hierarchies are not followed.
69 Symbolic links on the command line and in file hierarchies are followed.
71 Ignore files and directories matching the specified
74 No symbolic links are followed.
77 Display an entry for each file in a file hierarchy.
79 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
80 Gigabyte, Terabyte and Petabyte
82 Generate messages about directories that cannot be read, files
83 that cannot be opened, and so on. This is the default case.
84 This option exists solely for conformance with
87 Display an entry for each specified file.
91 Display an entry for all files and directories
95 Display a grand total.
97 Display block counts in 1024-byte (1-Kbyte) blocks.
99 File system mount points are not traversed.
104 utility counts the storage used by symbolic links and not the files they
114 options are specified, storage used by any symbolic links which are
115 followed is not counted or displayed.
117 Files having multiple hard links are counted (and displayed) a single
122 .Bl -tag -width BLOCKSIZE
124 If the environment variable
128 option is not specified, the block counts will be displayed in units of that
134 option is not specified, the block counts will be displayed in 512-byte blocks.