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.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)du.1 8.2 (Berkeley) 4/1/94 33.\" $FreeBSD$ 34.\" 35.Dd November 6, 2008 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 A 44.Op Fl H | L | P 45.Op Fl a | s | d Ar depth | Fl t Ar threshold 46.Op Fl c 47.Op Fl l 48.Op Fl h | k | m | B Ar blocksize 49.Op Fl n 50.Op Fl x 51.Op Fl I Ar mask 52.Op Ar 53.Sh DESCRIPTION 54The 55.Nm 56utility displays the file system block usage for each file argument 57and for each directory in the file hierarchy rooted in each directory 58argument. 59If no file is specified, the block usage of the hierarchy rooted in 60the current directory is displayed. 61.Pp 62The options are as follows: 63.Bl -tag -width indent 64.It Fl A 65Display the apparent size instead of the disk usage. 66This can be helpful when operating on compressed volumes or sparse files. 67.It Fl B Ar blocksize 68Calculate block counts in 69.Ar blocksize 70byte blocks. 71This is different from the 72.Fl k, m 73options or setting 74.Ev BLOCKSIZE 75and gives an estimate of how much space the examined file hierarchy would 76require on a filesystem with the given 77.Ar blocksize . 78Unless in 79.Fl A 80mode, 81.Ar blocksize 82is rounded up to the next multiple of 512. 83.It Fl H 84Symbolic links on the command line are followed, symbolic links in file 85hierarchies are not followed. 86.It Fl L 87Symbolic links on the command line and in file hierarchies are followed. 88.It Fl I Ar mask 89Ignore files and directories matching the specified 90.Ar mask . 91.It Fl P 92No symbolic links are followed. 93This is the default. 94.It Fl a 95Display an entry for each file in a file hierarchy. 96.It Fl h 97"Human-readable" output. 98Use unit suffixes: Byte, Kilobyte, Megabyte, 99Gigabyte, Terabyte and Petabyte. 100.It Fl r 101Generate messages about directories that cannot be read, files 102that cannot be opened, and so on. 103This is the default case. 104This option exists solely for conformance with 105.St -xpg4 . 106.It Fl s 107Display an entry for each specified file. 108(Equivalent to 109.Fl d Li 0 ) 110.It Fl t Ar threshold 111Display only entries for which size exceeds 112.Ar threshold . 113If 114.Ar threshold 115is negative, display only entries for which size is less than the absolute 116value of 117.Ar threshold . 118.It Fl d Ar depth 119Display an entry for all files and directories 120.Ar depth 121directories deep. 122.It Fl c 123Display a grand total. 124.It Fl k 125Display block counts in 1024-byte (1-Kbyte) blocks. 126.It Fl l 127If a file has multiple hard links, count its size many times. 128The default behavior of 129.Nm 130is to count files with multiple hard links only once. 131When the 132.Fl l 133option is specified, the hard link checks are disabled, and these files 134are counted (and displayed) as many times as they are found. 135.It Fl m 136Display block counts in 1048576-byte (1-Mbyte) blocks. 137.It Fl n 138Ignore files and directories with user 139.Dq nodump 140flag 141.Pq Dv UF_NODUMP 142set. 143.It Fl x 144File system mount points are not traversed. 145.El 146.Pp 147The 148.Nm 149utility counts the storage used by symbolic links and not the files they 150reference unless the 151.Fl H 152or 153.Fl L 154option is specified. 155If either the 156.Fl H 157or 158.Fl L 159options are specified, storage used by any symbolic links which are 160followed is not counted or displayed. 161.Sh ENVIRONMENT 162.Bl -tag -width BLOCKSIZE 163.It Ev BLOCKSIZE 164If the environment variable 165.Ev BLOCKSIZE 166is set, and the 167.Fl k, m 168or 169.Fl h 170options are not specified, the block counts will be displayed in units of 171that block size. 172If 173.Ev BLOCKSIZE 174is not set, and the 175.Fl k, m 176or 177.Fl h 178options are not specified, the block counts will be displayed in 512-byte 179blocks. 180.El 181.Sh SEE ALSO 182.Xr df 1 , 183.Xr chflags 2 , 184.Xr fts 3 , 185.Xr symlink 7 , 186.Xr quot 8 187.Sh HISTORY 188A 189.Nm 190command appeared in 191.At v1 . 192