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. 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.\" 4. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 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.\" $FreeBSD$ 30.\" 31.Dd November 6, 2008 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 A 40.Op Fl H | L | P 41.Op Fl a | s | d Ar depth | Fl t Ar threshold 42.Op Fl c 43.Op Fl l 44.Op Fl h | k | m | B Ar blocksize 45.Op Fl n 46.Op Fl x 47.Op Fl I Ar mask 48.Op Ar 49.Sh DESCRIPTION 50The 51.Nm 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. 57.Pp 58The options are as follows: 59.Bl -tag -width indent 60.It Fl A 61Display the apparent size instead of the disk usage. 62This can be helpful when operating on compressed volumes or sparse files. 63.It Fl B Ar blocksize 64Calculate block counts in 65.Ar blocksize 66byte blocks. 67This is different from the 68.Fl k, 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 L 83Symbolic links on the command line and in file hierarchies are followed. 84.It Fl I Ar mask 85Ignore files and directories matching the specified 86.Ar mask . 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 h 93"Human-readable" output. 94Use unit suffixes: Byte, Kilobyte, Megabyte, 95Gigabyte, Terabyte and Petabyte. 96.It Fl r 97Generate messages about directories that cannot be read, files 98that cannot be opened, and so on. 99This is the default case. 100This option exists solely for conformance with 101.St -xpg4 . 102.It Fl s 103Display an entry for each specified file. 104(Equivalent to 105.Fl d Li 0 ) 106.It Fl t Ar threshold 107Display only entries for which size exceeds 108.Ar threshold . 109If 110.Ar threshold 111is negative, display only entries for which size is less than the absolute 112value of 113.Ar threshold . 114.It Fl d Ar depth 115Display an entry for all files and directories 116.Ar depth 117directories deep. 118.It Fl c 119Display a grand total. 120.It Fl k 121Display block counts in 1024-byte (1-Kbyte) blocks. 122.It Fl l 123If a file has multiple hard links, count its size many times. 124The default behavior of 125.Nm 126is to count files with multiple hard links only once. 127When the 128.Fl l 129option is specified, the hard link checks are disabled, and these files 130are counted (and displayed) as many times as they are found. 131.It Fl m 132Display block counts in 1048576-byte (1-Mbyte) blocks. 133.It Fl n 134Ignore files and directories with user 135.Dq nodump 136flag 137.Pq Dv UF_NODUMP 138set. 139.It Fl x 140File system mount points are not traversed. 141.El 142.Pp 143The 144.Nm 145utility counts the storage used by symbolic links and not the files they 146reference unless the 147.Fl H 148or 149.Fl L 150option is specified. 151If either the 152.Fl H 153or 154.Fl L 155options are specified, storage used by any symbolic links which are 156followed is not counted or displayed. 157.Sh ENVIRONMENT 158.Bl -tag -width BLOCKSIZE 159.It Ev BLOCKSIZE 160If the environment variable 161.Ev BLOCKSIZE 162is set, and the 163.Fl k, m 164or 165.Fl h 166options are not specified, the block counts will be displayed in units of 167that block size. 168If 169.Ev BLOCKSIZE 170is not set, and the 171.Fl k, m 172or 173.Fl h 174options are not specified, the block counts will be displayed in 512-byte 175blocks. 176.El 177.Sh SEE ALSO 178.Xr df 1 , 179.Xr chflags 2 , 180.Xr fts 3 , 181.Xr symlink 7 , 182.Xr quot 8 183.Sh HISTORY 184A 185.Nm 186command appeared in 187.At v1 . 188