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Annotation of src/usr.bin/du/du.1, Revision 1.2

1.2     ! deraadt     1: .\"    $NetBSD: du.1,v 1.4.2.1 1995/12/05 02:45:41 jtc Exp $
1.1       deraadt     2: .\"
                      3: .\" Copyright (c) 1990, 1993
                      4: .\"    The Regents of the University of California.  All rights reserved.
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                     16: .\"    This product includes software developed by the University of
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                     22: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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                     33: .\"
                     34: .\"    @(#)du.1        8.2 (Berkeley) 4/1/94
                     35: .\"
                     36: .Dd April 1, 1994
                     37: .Dt DU 1
                     38: .Os
                     39: .Sh NAME
                     40: .Nm du
                     41: .Nd display disk usage statistics
                     42: .Sh SYNOPSIS
                     43: .Nm du
                     44: .Op Fl H | Fl L | Fl P
                     45: .Op Fl a | Fl s
                     46: .Op Fl kx
                     47: .Op Ar file ...
                     48: .Sh DESCRIPTION
                     49: The
                     50: .Nm du
                     51: utility displays the file system block usage for each file argument
                     52: and for each directory in the file hierarchy rooted in each directory
                     53: argument.
                     54: If no file is specified, the block usage of the hierarchy rooted in
                     55: the current directory is displayed.
                     56: .Pp
                     57: The options are as follows:
                     58: .Bl -tag -width Ds
                     59: .It Fl H
                     60: Symbolic links on the command line are followed.
                     61: (Symbolic links encountered in the tree traversal are not followed.)
                     62: .It Fl L
                     63: All symbolic links are followed.
                     64: .It Fl P
                     65: No symbolic links are followed.
                     66: .It Fl a
                     67: Display an entry for each file in the file hierarchy.
                     68: .It Fl k
                     69: By default,
                     70: .Nm du
                     71: displays the number of blocks as returned by the
                     72: .Xr stat  2
                     73: system call, i.e. 512-byte blocks.
                     74: If the
                     75: .Fl k
                     76: flag is specified, the number displayed is the number of 1024-byte
                     77: blocks.
                     78: Partial numbers of blocks are rounded up.
                     79: .It Fl s
                     80: Display only the grand total for the specified files.
                     81: .It Fl x
                     82: Filesystem mount points are not traversed.
                     83: .El
                     84: .Pp
                     85: .Nm Du
                     86: counts the storage used by symbolic links and not the files they
                     87: reference unless the
                     88: .Fl H
                     89: or
                     90: .Fl L
                     91: option is specified.
                     92: If either the
                     93: .Fl H
                     94: or
                     95: .Fl L
                     96: options are specified, storage used by any symbolic links which are
                     97: followed is not counted or displayed.
                     98: The
                     99: .Fl H ,
                    100: .Fl L
                    101: and
                    102: .Fl P
                    103: options override each other and the command's actions are determined
                    104: by the last one specified.
                    105: .Pp
                    106: Files having multiple hard links are counted (and displayed) a single
                    107: time per
                    108: .Nm du
                    109: execution.
1.2     ! deraadt   110: .Sh ENVIRONMENT VARIABLES
1.1       deraadt   111: .Bl -tag -width BLOCKSIZE
                    112: .It Ev BLOCKSIZE
1.2     ! deraadt   113: If the environment variable
1.1       deraadt   114: .Ev BLOCKSIZE
                    115: is set, and the
                    116: .Fl k
                    117: option is not specified, the block counts will be displayed in units of that
                    118: size block.
                    119: .El
                    120: .Sh SEE ALSO
                    121: .Xr df 1 ,
                    122: .Xr fts 3 ,
                    123: .Xr symlink 7 ,
                    124: .Xr quot 8
                    125: .Sh HISTORY
                    126: A
                    127: .Nm du
                    128: command appeared in
                    129: .At v6 .