386BSD 0.1 development

[unix-history] / usr / src / usr.bin / du / du.1

diff --git a/usr/src/usr.bin/du/du.1 b/usr/src/usr.bin/du/du.1
index c965680..07c754b 100644 (file)
--- a/usr/src/usr.bin/du/du.1
+++ b/usr/src/usr.bin/du/du.1
@@ -1,34 +1,61 @@
 .\" Copyright (c) 1990 The Regents of the University of California.
 .\" All rights reserved.
 .\"
 .\" Copyright (c) 1990 The Regents of the University of California.
 .\" All rights reserved.
 .\"

-.\" %sccs.include.redist.man%
+.\" 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.

 .\"
 .\"

-.\"     @(#)du.1       6.8 (Berkeley) %G%
+.\" 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.

 .\"
 .\"

-.Dd 
+.\"     @(#)du.1       6.13 (Berkeley) 6/20/91
+.\"
+.Dd June 20, 1991

 .Dt DU 1
 .Os BSD 4.4
 .Sh NAME
 .Nm du
 .Dt DU 1
 .Os BSD 4.4
 .Sh NAME
 .Nm du

-.Nd display disk usage statistics
+.Nd Display disk usage statistics

 .Sh SYNOPSIS
 .Nm du
 .Sh SYNOPSIS
 .Nm du

-.Op Fl aksx
-.Op Ar pathname ...
+.Op Fl a Li \&| Fl s
+.Op Fl kx
+.Op Ar file ...

 .Sh DESCRIPTION
 The
 .Nm du
 .Sh DESCRIPTION
 The
 .Nm du

-utility displays the file system block usage of each file argument
-or of each directory in the file hierarchy rooted in each directory
+utility displays the file system block usage for each file argument
+and for each directory in the file hierarchy rooted in each directory

 argument.
 argument.

-By default, the block usage of the hierarchy rooted in the current
-directory is displayed.
+If no file is specified, the block usage of the hierarchy rooted in
+the current directory is displayed.

 .Pp
 The options are as follows:
 .Pp
 The options are as follows:

-.Tw Ds
-.Tp Fl a
-Generate an entry for each file.
-.Tp Fl k
+.Bl -tag -width Ds
+.It Fl a
+Display an entry for each file in the file hierarchy.
+.It Fl k

 By default,
 .Nm du
 displays the number of blocks as returned by the
 By default,
 .Nm du
 displays the number of blocks as returned by the


@@ -37,12 +64,18 @@ system call, i.e. 512-byte blocks.
 If the
 .Fl k
 flag is specified, the number displayed is the number of 1024-byte
 If the
 .Fl k
 flag is specified, the number displayed is the number of 1024-byte

-blocks with partial blocks rounded up.
-.Tp Fl s
-Generate only the grand total.
-.Tp Fl x
-Don't traverse any mount points.
-.Tp
+blocks.
+Partial numbers of blocks are rounded up.
+.It Fl s
+Display only the grand total for the specified files.
+.It Fl x
+Filesystem mount points are not traversed.
+.El
+.Pp
+If
+.Ar file
+is a symbolic link referencing an existing file, the file referenced
+by the link is reported on instead of the link itself.

 .Pp
 Files having multiple hard links are counted (and displayed) a single
 time per
 .Pp
 Files having multiple hard links are counted (and displayed) a single
 time per


@@ -53,5 +86,6 @@ execution.
 .Xr quot 8
 .Sh HISTORY
 A
 .Xr quot 8
 .Sh HISTORY
 A

-.Nm du
-command appeared in Version 6 AT&T Unix.
+.Nm
+command appeared in
+.At v6 .