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 April 1, 1994 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 P | Fl H | Fl L 44.Op Fl a | s | d Ar depth 45.Op Fl c 46.Op Fl h | k 47.Op Fl x 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. 57If the 58.Fl k 59flag is specified, the number of 1024-byte 60blocks used by the file is displayed, otherwise 61.Xr getbsize 3 62is used to determine the preferred block size. 63Partial numbers of blocks are rounded up. 64.Pp 65The options are as follows: 66.Bl -tag -width indent 67.It Fl P 68No symbolic links are followed. 69(default) 70.It Fl H 71Symbolic links on the command line are followed, symbolic links in file 72hierarchies are not followed. 73.It Fl L 74Symbolic links on the command line and in file hierarchies are followed. 75.It Fl a 76Display an entry for each file in a file hierarchy. 77.It Fl h 78"Human-readable" output. Use 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. This is the default case. 83This option exists solely for conformance with 84.St -xpg4 . 85.It Fl s 86Display an entry for each specified file. 87(Equivalent to 88.Fl d 890 ) 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 x 99Filesystem mount points are not traversed. 100.El 101.Pp 102.Nm Du 103counts the storage used by symbolic links and not the files they 104reference unless the 105.Fl H 106or 107.Fl L 108option is specified. 109If either the 110.Fl H 111or 112.Fl L 113options are specified, storage used by any symbolic links which are 114followed is not counted or displayed. 115.Pp 116Files having multiple hard links are counted (and displayed) a single 117time per 118.Nm 119execution. 120.Sh ENVIRONMENT 121.Bl -tag -width BLOCKSIZE 122.It Ev BLOCKSIZE 123If the environment variable 124.Ev BLOCKSIZE 125is set, and the 126.Fl k 127option is not specified, the block counts will be displayed in units of that 128size block. 129If 130.Ev BLOCKSIZE 131is not set, and the 132.Fl k 133option is not specified, the block counts will be displayed in 512-byte blocks. 134.El 135.Sh SEE ALSO 136.Xr df 1 , 137.Xr fts 3 , 138.Xr symlink 7 , 139.Xr quot 8 140.Sh HISTORY 141A 142.Nm 143command appeared in 144.At v1 . 145