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 b4d533f..07c754b 100644 (file)
--- a/usr/src/usr.bin/du/du.1
+++ b/usr/src/usr.bin/du/du.1
@@ -1,48 +1,91 @@
-.\"    @(#)du.1        4.1 (Berkeley) %G%
+.\" Copyright (c) 1990 The Regents of the University of California.
+.\" All rights reserved.

 .\"
 .\"

-.TH DU 1 
-.AT 3
-.SH NAME
-du \- summarize disk usage
-.SH SYNOPSIS
-.B du
-[
-.B \-s
-] [
-.B \-a
-] [ name ... ]
-.SH DESCRIPTION
-.I Du
-gives the number of blocks contained in all files
-and (recursively) directories within each specified directory or
-file
-.IR name .
+.\" 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       6.13 (Berkeley) 6/20/91
+.\"
+.Dd June 20, 1991
+.Dt DU 1
+.Os BSD 4.4
+.Sh NAME
+.Nm du
+.Nd Display disk usage statistics
+.Sh SYNOPSIS
+.Nm du
+.Op Fl a Li \&| Fl s
+.Op Fl kx
+.Op Ar file ...
+.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 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
+.Xr stat  2
+system call, i.e. 512-byte blocks.
+If the
+.Fl k
+flag is specified, the number displayed is the number of 1024-byte
+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
 If

-.I name
-is missing,
-`\fB.\fR'
-is used.
-.PP
-The optional argument
-.B \-s
-causes only the grand total to
-be given.
-The optional argument
-.B \-a
-causes an entry to be generated
-for each file.
-Absence of either causes an entry to be generated for
-each directory only.
-.PP
-A file which has two links to it is only counted once.
-.SH "SEE ALSO"
-df(1), quot(8)
-.SH BUGS
-Non-directories
-given as arguments (not under
-.B \-a
-option) are not listed.
-.br
-If there are too many distinct linked files,
-.I du
-counts the excess files multiply.
+.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
+.Nm du
+execution.
+.Sh SEE ALSO
+.Xr df 1 ,
+.Xr quot 8
+.Sh HISTORY
+A
+.Nm
+command appeared in
+.At v6 .