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 4, 2012 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 g | 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 54the current directory is displayed. 55.Pp 56The options are as follows: 57.Bl -tag -width indent 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, m 67and 68.Fl g 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 g 99Display block counts in 1073741824-byte (1 GiB) blocks. 100.It Fl h 101.Dq Human-readable 102output. 103Use unit suffixes: Byte, Kilobyte, Megabyte, 104Gigabyte, Terabyte and Petabyte. 105.It Fl k 106Display block counts in 1024-byte (1 kiB) blocks. 107.It Fl l 108If a file has multiple hard links, count its size multiple times. 109The default behavior of 110.Nm 111is to count files with multiple hard links only once. 112When the 113.Fl l 114option is specified, the hard link checks are disabled, and these files 115are counted (and displayed) as many times as they are found. 116.It Fl m 117Display block counts in 1048576-byte (1 MiB) blocks. 118.It Fl n 119Ignore files and directories with user 120.Dq nodump 121flag 122.Pq Dv UF_NODUMP 123set. 124.It Fl r 125Generate messages about directories that cannot be read, files 126that cannot be opened, and so on. 127This is the default case. 128This option exists solely for conformance with 129.St -xpg4 . 130.It Fl s 131Display an entry for each specified file. 132(Equivalent to 133.Fl d Li 0 ) 134.It Fl t Ar threshold 135Display only entries for which size exceeds 136.Ar threshold . 137If 138.Ar threshold 139is negative, display only entries for which size is less than the absolute 140value of 141.Ar threshold . 142.It Fl x 143File system mount points are not traversed. 144.El 145.Pp 146The 147.Nm 148utility counts the storage used by symbolic links and not the files they 149reference unless the 150.Fl H 151or 152.Fl L 153option is specified. 154If either the 155.Fl H 156or 157.Fl L 158option is specified, storage used by any symbolic links which are 159followed is not counted (or displayed). 160The 161.Fl H , 162.Fl L 163and 164.Fl P 165options override each other and the command's actions are determined 166by the last one specified. 167.Pp 168The 169.Fl h, k 170and 171.Fl m 172options all override each other; the last one specified determines 173the block counts used. 174.Sh ENVIRONMENT 175.Bl -tag -width BLOCKSIZE 176.It Ev BLOCKSIZE 177If the environment variable 178.Ev BLOCKSIZE 179is set, and the 180.Fl h, k 181or 182.Fl m 183options are not specified, the block counts will be displayed in units of 184that block size. 185If 186.Ev BLOCKSIZE 187is not set, and the 188.Fl h, k 189or 190.Fl m 191options are not specified, the block counts will be displayed in 512-byte 192blocks. 193.El 194.Sh EXAMPLES 195Show disk usage for all files in the current directory. 196Output is in human-readable form: 197.Pp 198.Dl # du -ah 199.Pp 200Summarize disk usage in the current directory: 201.Pp 202.Dl # du -hs 203.Pp 204Summarize disk usage for a specific directory: 205.Pp 206.Dl # du -hs /home 207.Pp 208Show name and size of all C files in a specific directory. 209Also display a grand total at the end: 210.Pp 211.Dl # du -ch /usr/src/sys/kern/*.c 212.Sh SEE ALSO 213.Xr df 1 , 214.Xr chflags 2 , 215.Xr fts 3 , 216.Xr symlink 7 , 217.Xr quot 8 218.Sh HISTORY 219A 220.Nm 221command appeared in 222.At v1 . 223