1.\" Copyright (c) 1990, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.
--- 12 unchanged lines hidden (view full) ---
21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26.\" SUCH DAMAGE.
27.\"
28.\" @(#)du.1 8.2 (Berkeley) 4/1/94
29.\" $FreeBSD: head/usr.bin/du/du.1 228356 2011-12-09 02:30:56Z gjb $
30.\"
31.Dd December 8, 2011
32.Dt DU 1
33.Os
34.Sh NAME
35.Nm du
36.Nd display disk usage statistics
37.Sh SYNOPSIS
38.Nm
39.Op Fl Aclnx
40.Op Fl H | L | P
41.Op Fl h | k | m
42.Op Fl a | s | d Ar depth
43.Op Fl B Ar blocksize
44.Op Fl I Ar mask
45.Op Fl t Ar threshold
46.Op Ar
47.Sh DESCRIPTION
48The
49.Nm
50utility displays the file system block usage for each file argument
51and for each directory in the file hierarchy rooted in each directory
52argument.
53If no file is specified, the block usage of the hierarchy rooted in
--- 4 unchanged lines hidden (view full) ---
58.It Fl A
59Display the apparent size instead of the disk usage.
60This can be helpful when operating on compressed volumes or sparse files.
61.It Fl B Ar blocksize
62Calculate block counts in
63.Ar blocksize
64byte blocks.
65This is different from the
66.Fl h, k
67and
68.Fl m
69options or setting
70.Ev BLOCKSIZE
71and gives an estimate of how much space the examined file hierarchy would
72require on a filesystem with the given
73.Ar blocksize .
74Unless in
75.Fl A
76mode,
77.Ar blocksize
78is rounded up to the next multiple of 512.
79.It Fl H
80Symbolic links on the command line are followed, symbolic links in file
81hierarchies are not followed.
82.It Fl I Ar mask
83Ignore files and directories matching the specified
84.Ar mask .
85.It Fl L
86Symbolic links on the command line and in file hierarchies are followed.
87.It Fl P
88No symbolic links are followed.
89This is the default.
90.It Fl a
91Display an entry for each file in a file hierarchy.
92.It Fl c
93Display a grand total.
94.It Fl d Ar depth
95Display an entry for all files and directories
96.Ar depth
97directories deep.
98.It Fl h
99.Dq Human-readable
100output.
101Use unit suffixes: Byte, Kilobyte, Megabyte,
102Gigabyte, Terabyte and Petabyte.
103.It Fl k
104Display block counts in 1024-byte (1-Kbyte) blocks.
105.It Fl l
106If a file has multiple hard links, count its size multiple times.
107The default behavior of
108.Nm
109is to count files with multiple hard links only once.
110When the
111.Fl l
112option is specified, the hard link checks are disabled, and these files
113are counted (and displayed) as many times as they are found.
114.It Fl m
115Display block counts in 1048576-byte (1-Mbyte) blocks.
116.It Fl n
117Ignore files and directories with user
118.Dq nodump
119flag
120.Pq Dv UF_NODUMP
121set.
122.It Fl r
123Generate messages about directories that cannot be read, files
124that cannot be opened, and so on.
125This is the default case.
126This option exists solely for conformance with
127.St -xpg4 .
128.It Fl s
129Display an entry for each specified file.
130(Equivalent to
131.Fl d Li 0 )
132.It Fl t Ar threshold
133Display only entries for which size exceeds
134.Ar threshold .
135If
136.Ar threshold
137is negative, display only entries for which size is less than the absolute
138value of
139.Ar threshold .
140.It Fl x
141File system mount points are not traversed.
142.El
143.Pp
144The
145.Nm
146utility counts the storage used by symbolic links and not the files they
147reference unless the
148.Fl H
149or
150.Fl L
151option is specified.
152If either the
153.Fl H
154or
155.Fl L
156option is specified, storage used by any symbolic links which are
157followed is not counted (or displayed).
158.Pp
159The
160.Fl h, k
161and
162.Fl m
163options all override each other; the last one specified determines
164the block counts used.
165.Sh ENVIRONMENT
166.Bl -tag -width BLOCKSIZE
167.It Ev BLOCKSIZE
168If the environment variable
169.Ev BLOCKSIZE
170is set, and the
171.Fl h, k
172or
173.Fl m
174options are not specified, the block counts will be displayed in units of
175that block size.
176If
177.Ev BLOCKSIZE
178is not set, and the
179.Fl h, k
180or
181.Fl m
182options are not specified, the block counts will be displayed in 512-byte
183blocks.
184.El
185.Sh SEE ALSO
186.Xr df 1 ,
187.Xr chflags 2 ,
188.Xr fts 3 ,
189.Xr symlink 7 ,
190.Xr quot 8
191.Sh HISTORY
192A
193.Nm
194command appeared in
195.At v1 .
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.
--- 12 unchanged lines hidden (view full) ---
21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26.\" SUCH DAMAGE.
27.\"
28.\" @(#)du.1 8.2 (Berkeley) 4/1/94
29.\" $FreeBSD: head/usr.bin/du/du.1 228356 2011-12-09 02:30:56Z gjb $
30.\"
31.Dd December 8, 2011
32.Dt DU 1
33.Os
34.Sh NAME
35.Nm du
36.Nd display disk usage statistics
37.Sh SYNOPSIS
38.Nm
39.Op Fl Aclnx
40.Op Fl H | L | P
41.Op Fl h | k | m
42.Op Fl a | s | d Ar depth
43.Op Fl B Ar blocksize
44.Op Fl I Ar mask
45.Op Fl t Ar threshold
46.Op Ar
47.Sh DESCRIPTION
48The
49.Nm
50utility displays the file system block usage for each file argument
51and for each directory in the file hierarchy rooted in each directory
52argument.
53If no file is specified, the block usage of the hierarchy rooted in
--- 4 unchanged lines hidden (view full) ---
58.It Fl A
59Display the apparent size instead of the disk usage.
60This can be helpful when operating on compressed volumes or sparse files.
61.It Fl B Ar blocksize
62Calculate block counts in
63.Ar blocksize
64byte blocks.
65This is different from the
66.Fl h, k
67and
68.Fl m
69options or setting
70.Ev BLOCKSIZE
71and gives an estimate of how much space the examined file hierarchy would
72require on a filesystem with the given
73.Ar blocksize .
74Unless in
75.Fl A
76mode,
77.Ar blocksize
78is rounded up to the next multiple of 512.
79.It Fl H
80Symbolic links on the command line are followed, symbolic links in file
81hierarchies are not followed.
82.It Fl I Ar mask
83Ignore files and directories matching the specified
84.Ar mask .
85.It Fl L
86Symbolic links on the command line and in file hierarchies are followed.
87.It Fl P
88No symbolic links are followed.
89This is the default.
90.It Fl a
91Display an entry for each file in a file hierarchy.
92.It Fl c
93Display a grand total.
94.It Fl d Ar depth
95Display an entry for all files and directories
96.Ar depth
97directories deep.
98.It Fl h
99.Dq Human-readable
100output.
101Use unit suffixes: Byte, Kilobyte, Megabyte,
102Gigabyte, Terabyte and Petabyte.
103.It Fl k
104Display block counts in 1024-byte (1-Kbyte) blocks.
105.It Fl l
106If a file has multiple hard links, count its size multiple times.
107The default behavior of
108.Nm
109is to count files with multiple hard links only once.
110When the
111.Fl l
112option is specified, the hard link checks are disabled, and these files
113are counted (and displayed) as many times as they are found.
114.It Fl m
115Display block counts in 1048576-byte (1-Mbyte) blocks.
116.It Fl n
117Ignore files and directories with user
118.Dq nodump
119flag
120.Pq Dv UF_NODUMP
121set.
122.It Fl r
123Generate messages about directories that cannot be read, files
124that cannot be opened, and so on.
125This is the default case.
126This option exists solely for conformance with
127.St -xpg4 .
128.It Fl s
129Display an entry for each specified file.
130(Equivalent to
131.Fl d Li 0 )
132.It Fl t Ar threshold
133Display only entries for which size exceeds
134.Ar threshold .
135If
136.Ar threshold
137is negative, display only entries for which size is less than the absolute
138value of
139.Ar threshold .
140.It Fl x
141File system mount points are not traversed.
142.El
143.Pp
144The
145.Nm
146utility counts the storage used by symbolic links and not the files they
147reference unless the
148.Fl H
149or
150.Fl L
151option is specified.
152If either the
153.Fl H
154or
155.Fl L
156option is specified, storage used by any symbolic links which are
157followed is not counted (or displayed).
158.Pp
159The
160.Fl h, k
161and
162.Fl m
163options all override each other; the last one specified determines
164the block counts used.
165.Sh ENVIRONMENT
166.Bl -tag -width BLOCKSIZE
167.It Ev BLOCKSIZE
168If the environment variable
169.Ev BLOCKSIZE
170is set, and the
171.Fl h, k
172or
173.Fl m
174options are not specified, the block counts will be displayed in units of
175that block size.
176If
177.Ev BLOCKSIZE
178is not set, and the
179.Fl h, k
180or
181.Fl m
182options are not specified, the block counts will be displayed in 512-byte
183blocks.
184.El
185.Sh SEE ALSO
186.Xr df 1 ,
187.Xr chflags 2 ,
188.Xr fts 3 ,
189.Xr symlink 7 ,
190.Xr quot 8
191.Sh HISTORY
192A
193.Nm
194command appeared in
195.At v1 .