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 February 25, 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 H | L | P 44.Op Fl a | s | d Ar depth 45.Op Fl c 46.Op Fl l 47.Op Fl h | k | m 48.Op Fl n 49.Op Fl x 50.Op Fl I Ar mask 51.Op Ar 52.Sh DESCRIPTION 53The 54.Nm 55utility displays the file system block usage for each file argument 56and for each directory in the file hierarchy rooted in each directory 57argument. 58If no file is specified, the block usage of the hierarchy rooted in 59the current directory is displayed. 60.Pp 61The options are as follows: 62.Bl -tag -width indent 63.It Fl H 64Symbolic links on the command line are followed, symbolic links in file 65hierarchies are not followed. 66.It Fl L 67Symbolic links on the command line and in file hierarchies are followed. 68.It Fl I Ar mask 69Ignore files and directories matching the specified 70.Ar mask . 71.It Fl P 72No symbolic links are followed. 73This is the default. 74.It Fl a 75Display an entry for each file in a file hierarchy. 76.It Fl h 77"Human-readable" output. 78Use unit suffixes: Byte, Kilobyte, Megabyte, 79Gigabyte, Terabyte and Petabyte. 80.It Fl r 81Generate messages about directories that cannot be read, files 82that cannot be opened, and so on. 83This is the default case. 84This option exists solely for conformance with 85.St -xpg4 . 86.It Fl s 87Display an entry for each specified file. 88(Equivalent to 89.Fl d Li 0 ) 90.It Fl d Ar depth 91Display an entry for all files and directories 92.Ar depth 93directories deep. 94.It Fl c 95Display a grand total. 96.It Fl k 97Display block counts in 1024-byte (1-Kbyte) blocks. 98.It Fl l 99If a file has multiple hard links, count its size many times. 100The default behavior of 101.Nm 102is to count files with multiple hard links only once. 103When the 104.Fl l 105option is specified, the hard link checks are disabled, and these files 106are counted (and displayed) as many times as they are found. 107.It Fl m 108Display block counts in 1048576-byte (1-Mbyte) blocks. 109.It Fl n 110Ignore files and directories with user 111.Dq nodump 112flag 113.Pq Dv UF_NODUMP 114set. 115.It Fl x 116File system mount points are not traversed. 117.El 118.Pp 119The 120.Nm 121utility counts the storage used by symbolic links and not the files they 122reference unless the 123.Fl H 124or 125.Fl L 126option is specified. 127If either the 128.Fl H 129or 130.Fl L 131options are specified, storage used by any symbolic links which are 132followed is not counted or displayed. 133.Sh ENVIRONMENT 134.Bl -tag -width BLOCKSIZE 135.It Ev BLOCKSIZE 136If the environment variable 137.Ev BLOCKSIZE 138is set, and the 139.Fl k 140option is not specified, the block counts will be displayed in units of that 141size block. 142If 143.Ev BLOCKSIZE 144is not set, and the 145.Fl k 146option is not specified, the block counts will be displayed in 512-byte blocks. 147.El 148.Sh SEE ALSO 149.Xr df 1 , 150.Xr chflags 2 , 151.Xr fts 3 , 152.Xr symlink 7 , 153.Xr quot 8 154.Sh HISTORY 155A 156.Nm 157command appeared in 158.At v1 . 159