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Annotation of src/usr.bin/du/du.1, Revision 1.1

1.1     ! deraadt     1: .\"    $NetBSD: du.1,v 1.4 1995/03/28 17:50:14 glass Exp $
        !             2: .\"
        !             3: .\" Copyright (c) 1990, 1993
        !             4: .\"    The Regents of the University of California.  All rights reserved.
        !             5: .\"
        !             6: .\" Redistribution and use in source and binary forms, with or without
        !             7: .\" modification, are permitted provided that the following conditions
        !             8: .\" are met:
        !             9: .\" 1. Redistributions of source code must retain the above copyright
        !            10: .\"    notice, this list of conditions and the following disclaimer.
        !            11: .\" 2. Redistributions in binary form must reproduce the above copyright
        !            12: .\"    notice, this list of conditions and the following disclaimer in the
        !            13: .\"    documentation and/or other materials provided with the distribution.
        !            14: .\" 3. All advertising materials mentioning features or use of this software
        !            15: .\"    must display the following acknowledgement:
        !            16: .\"    This product includes software developed by the University of
        !            17: .\"    California, Berkeley and its contributors.
        !            18: .\" 4. Neither the name of the University nor the names of its contributors
        !            19: .\"    may be used to endorse or promote products derived from this software
        !            20: .\"    without specific prior written permission.
        !            21: .\"
        !            22: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            23: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            24: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            25: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            26: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            27: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            28: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            29: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            30: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            31: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            32: .\" SUCH DAMAGE.
        !            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.
        !           110: .Sh ENVIRONMENTAL VARIABLES
        !           111: .Bl -tag -width BLOCKSIZE
        !           112: .It Ev BLOCKSIZE
        !           113: If the environmental variable
        !           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 .