xref: /freebsd/usr.bin/du/du.1 (revision 41466b50c1d5bfd1cf6adaae547a579a75d7c04e)
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32.\"	@(#)du.1	8.2 (Berkeley) 4/1/94
33.\" $FreeBSD$
34.\"
35.Dd April 1, 1994
36.Dt DU 1
37.Os
38.Sh NAME
39.Nm du
40.Nd display disk usage statistics
41.Sh SYNOPSIS
42.Nm
43.Op Fl H | L | P
44.Op Fl I Ar mask
45.Op Fl a | s | d Ar depth
46.Op Fl c
47.Op Fl h | k
48.Op Fl x
49.Op Ar
50.Sh DESCRIPTION
51The
52.Nm
53utility displays the file system block usage for each file argument
54and for each directory in the file hierarchy rooted in each directory
55argument.
56If no file is specified, the block usage of the hierarchy rooted in
57the current directory is displayed.
58If the
59.Fl k
60flag is specified, the number of 1024-byte
61blocks used by the file is displayed, otherwise
62.Xr getbsize 3
63is used to determine the preferred block size.
64Partial numbers of blocks are rounded up.
65.Pp
66The options are as follows:
67.Bl -tag -width indent
68.It Fl H
69Symbolic links on the command line are followed, symbolic links in file
70hierarchies are not followed.
71.It Fl L
72Symbolic links on the command line and in file hierarchies are followed.
73.It Fl I Ar mask
74Ignore files and directories matching the specified
75.Ar mask .
76.It Fl P
77No symbolic links are followed.
78This is the default.
79.It Fl a
80Display an entry for each file in a file hierarchy.
81.It Fl h
82"Human-readable" output.  Use unit suffixes: Byte, Kilobyte, Megabyte,
83Gigabyte, Terabyte and Petabyte
84.It Fl r
85Generate messages about directories that cannot be read, files
86that cannot be opened, and so on.  This is the default case.
87This option exists solely for conformance with
88.St -xpg4 .
89.It Fl s
90Display an entry for each specified file.
91(Equivalent to
92.Fl d Li 0 )
93.It Fl d Ar depth
94Display an entry for all files and directories
95.Ar depth
96directories deep.
97.It Fl c
98Display a grand total.
99.It Fl k
100Display block counts in 1024-byte (1-Kbyte) blocks.
101.It Fl x
102Filesystem mount points are not traversed.
103.El
104.Pp
105.Nm Du
106counts the storage used by symbolic links and not the files they
107reference unless the
108.Fl H
109or
110.Fl L
111option is specified.
112If either the
113.Fl H
114or
115.Fl L
116options are specified, storage used by any symbolic links which are
117followed is not counted or displayed.
118.Pp
119Files having multiple hard links are counted (and displayed) a single
120time per
121.Nm
122execution.
123.Sh ENVIRONMENT
124.Bl -tag -width BLOCKSIZE
125.It Ev BLOCKSIZE
126If the environment variable
127.Ev BLOCKSIZE
128is set, and the
129.Fl k
130option is not specified, the block counts will be displayed in units of that
131size block.
132If
133.Ev BLOCKSIZE
134is not set, and the
135.Fl k
136option is not specified, the block counts will be displayed in 512-byte blocks.
137.El
138.Sh SEE ALSO
139.Xr df 1 ,
140.Xr fts 3 ,
141.Xr symlink 7 ,
142.Xr quot 8
143.Sh HISTORY
144A
145.Nm
146command appeared in
147.At v1 .
148