xref: /freebsd/usr.bin/du/du.1 (revision 380a989b3223d455375b4fae70fd0b9bdd43bafb)
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32.\"	@(#)du.1	8.2 (Berkeley) 4/1/94
33.\"	$Id: du.1,v 1.10 1997/12/29 20:56:21 jkh Exp $
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 du
43.Op Fl P | Fl H | Fl L
44.Op Fl a | s | d Ar depth
45.Op Fl c
46.Op Fl k
47.Op Fl x
48.Op Ar file ...
49.Sh DESCRIPTION
50The
51.Nm du
52utility displays the file system block usage for each file argument
53and for each directory in the file hierarchy rooted in each directory
54argument.
55If no file is specified, the block usage of the hierarchy rooted in
56the current directory is displayed.
57If the
58.Fl k
59flag is specified, the number of 1024-byte
60blocks used by the file is displayed, otherwise
61.Xr getbsize 3
62is used to determine the preferred block size.
63Partial numbers of blocks are rounded up.
64.Pp
65The options are as follows:
66.Bl -tag -width Ds
67.It Fl P
68No symbolic links are followed. (default)
69.It Fl H
70Symbolic links on the command line are followed, symbolic links in file
71hierarchies are not followed.
72.It Fl L
73Symbolic links on the command line and in file hierarchies are followed.
74.It Fl a
75Display an entry for each file in a file hierarchy.
76.It Fl s
77Display an entry for each specified file. (Equivalent to
78.Fl d
790 )
80.It Fl d Ar depth
81Display an entry for all files and directories
82.Ar depth
83directories deep.
84.It Fl c
85Display a grand total.
86.It Fl k
87Display block counts in 1024-byte (1-Kbyte) blocks.
88.It Fl x
89Filesystem mount points are not traversed.
90.El
91.Pp
92.Nm Du
93counts the storage used by symbolic links and not the files they
94reference unless the
95.Fl H
96or
97.Fl L
98option is specified.
99If either the
100.Fl H
101or
102.Fl L
103options are specified, storage used by any symbolic links which are
104followed is not counted or displayed.
105.Pp
106Files having multiple hard links are counted (and displayed) a single
107time per
108.Nm du
109execution.
110.Sh ENVIRONMENT
111.Bl -tag -width BLOCKSIZE
112.It Ev BLOCKSIZE
113If the environment variable
114.Ev BLOCKSIZE
115is set, and the
116.Fl k
117option is not specified, the block counts will be displayed in 1024-byte blocks. If
118.Ev BLOCKSIZE
119is not set, and the
120.Fl k
121option is not specified, the block counts will be displayed in 512-byte blocks.
122.El
123.Sh SEE ALSO
124.Xr df 1 ,
125.Xr fts 3 ,
126.Xr symlink 7 ,
127.Xr quot 8
128.Sh HISTORY
129A
130.Nm du
131command appeared in
132.At v1 .
133