Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

1 files changed, 172 insertions, 0 deletions

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+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)du.1	8.2 (Berkeley) 4/1/94
+.\" $FreeBSD: src/usr.bin/du/du.1,v 1.30 2005/05/21 09:55:05 ru Exp $
+.\"
+.Dd June 2, 2004
+.Dt DU 1
+.Os
+.Sh NAME
+.Nm du
+.Nd display disk usage statistics
+.Sh SYNOPSIS
+.Nm du
+.Op Fl H | L | P
+.Op Fl a | s | d Ar depth
+.Op Fl c
+.Op Fl h | k | m | g
+.Op Fl x
+.Op Fl I Ar mask
+.Op Ar
+.Sh DESCRIPTION
+The
+.Nm du
+utility displays the file system block usage for each file argument
+and for each directory in the file hierarchy rooted in each directory
+argument.
+If no file is specified, the block usage of the hierarchy rooted in
+the current directory is displayed.
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl a
+Display an entry for each file in a file hierarchy.
+.It Fl c
+Display a grand total.
+.It Fl d Ar depth
+Display an entry for all files and directories
+.Ar depth
+directories deep.
+.It Fl H
+Symbolic links on the command line are followed, symbolic links in file
+hierarchies are not followed.
+.It Fl h
+"Human-readable" output.
+Use unit suffixes: Byte, Kilobyte, Megabyte,
+Gigabyte, Terabyte and Petabyte.
+.It Fl I Ar mask
+Ignore files and directories matching the specified
+.Ar mask .
+.It Fl g
+Display block counts in 1073741824-byte (1-Gbyte) blocks.
+.It Fl k
+Display block counts in 1024-byte (1-Kbyte) blocks.
+.It Fl L
+Symbolic links on the command line and in file hierarchies are followed.
+.It Fl m
+Display block counts in 1048576-byte (1-Mbyte) blocks.
+.It Fl P
+No symbolic links are followed.
+This is the default.
+.It Fl r
+Generate messages about directories that cannot be read, files
+that cannot be opened, and so on.
+This is the default case.
+This option exists solely for conformance with
+.St -xpg4 .
+.It Fl s
+Display an entry for each specified file.
+(Equivalent to
+.Fl d Li 0 )
+.It Fl x
+File system mount points are not traversed.
+.El
+.Pp
+The
+.Nm du
+utility counts the storage used by symbolic links and not the files they
+reference unless the
+.Fl H
+or
+.Fl L
+option is specified.
+If either the
+.Fl H
+or
+.Fl L
+options are specified, storage used by any symbolic links which are
+followed is not counted or displayed.
+If more than one of the
+.Fl H ,
+.Fl L ,
+and
+.Fl P
+options is specified, the last one given is used.
+.Pp
+Files having multiple hard links are counted (and displayed) a single
+time per
+.Nm du
+execution.
+Directories having multiple hard links (typically Time Machine backups) are
+counted a single time per
+.Nm du
+execution.
+.Sh ENVIRONMENT
+.Bl -tag -width BLOCKSIZE
+.It Ev BLOCKSIZE
+If the environment variable
+.Ev BLOCKSIZE
+is set, and the
+.Fl k
+option is not specified, the block counts will be displayed in units of that
+size block.
+If
+.Ev BLOCKSIZE
+is not set, and the
+.Fl k
+option is not specified, the block counts will be displayed in 512-byte blocks.
+.El
+.Sh LEGACY DESCRIPTION
+In legacy mode, only one of the
+.Fl H ,
+.Fl L ,
+or
+.Fl P
+options may be specified.
+.Pp
+The command will detect and report a SYMLOOP error
+(loop involving symbolic links).
+In legacy mode, this is not the case.
+.Pp
+For more information about legacy mode, see
+.Xr compat 5 .
+.Sh SEE ALSO
+.Xr df 1 ,
+.Xr fts 3 ,
+.Xr compat 5 ,
+.Xr symlink 7 ,
+.Xr quot 8
+.Sh HISTORY
+A
+.Nm du
+command appeared in
+.At v1 .