BSD 4_4 release

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

diff --git a/usr/src/bin/df/df.1 b/usr/src/bin/df/df.1
index 6c92255..235c2af 100644 (file)
--- a/usr/src/bin/df/df.1
+++ b/usr/src/bin/df/df.1
@@ -1,23 +1,37 @@
-.\" Copyright (c) 1989, 1990 The Regents of the University of California.
-.\" All rights reserved.
+.\" Copyright (c) 1989, 1990, 1993
+.\"    The Regents of the University of California.  All rights reserved.

 .\"
 .\"

-.\" Redistribution and use in source and binary forms are permitted provided
-.\" that: (1) source distributions retain this entire copyright notice and
-.\" comment, and (2) distributions including binaries display the following
-.\" acknowledgement:  ``This product includes software developed by the
-.\" University of California, Berkeley and its contributors'' in the
-.\" documentation or other materials provided with the distribution and in
-.\" all advertising materials mentioning features or use of this software.
-.\" 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
-.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\" 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.

 .\"
 .\"

-.\"     @(#)df.1       6.7 (Berkeley) 7/24/90
+.\" 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 July 24, 1990
+.\"     @(#)df.1       8.1 (Berkeley) 5/31/93
+.\"
+.Dd May 31, 1993

 .Dt DF 1
 .Os BSD 4
 .Sh NAME
 .Dt DF 1
 .Os BSD 4
 .Sh NAME


@@ -25,41 +39,67 @@
 .Nd display free disk space
 .Sh SYNOPSIS
 .Nm df
 .Nd display free disk space
 .Sh SYNOPSIS
 .Nm df

-.Op Fl ikn
-.Op Ar file Li \&| Ar filesystem \&...
+.Op Fl in
+.Op Fl t Ar type
+.Op Ar file | Ar filesystem ...

 .Sh DESCRIPTION
 .Nm Df
 .Sh DESCRIPTION
 .Nm Df

-displays statistics about the amount of free disk space on the
-filesystem
+displays statistics about the amount of free disk space on the specified

 .Ar filesystem
 or on the filesystem of which
 .Ar file
 is a part.
 .Ar filesystem
 or on the filesystem of which
 .Ar file
 is a part.

-If neither a file or a filesystem argument is given,
-statistics for every filesystem mounted is displayed.
+Values are displayed in 512-byte per block block counts.
+If neither a file or a filesystem operand is specified,
+statistics for all mounted filesystems are displayed
+(subject to the
+.Fl t
+option below).

 .Pp
 The following options are available:
 .Pp
 The following options are available:

-.Tw Ds
-.Tp Fl i
+.Bl -tag -width Ds
+.It Fl i

 Include statistics on the number of free inodes.
 Include statistics on the number of free inodes.

-.Tp Fl k
-By default, all reported numbers are in 512-byte blocks.
-This causes the numbers to be reported in kilobytes.
-.Tp Fl n
+.It Fl n

 Print out the previously obtained statistics from the filesystems.
 Print out the previously obtained statistics from the filesystems.

-This option should be used
-if it is possible that one or more filesystems are
-in a state such that they will not be able
-to provide statistics without a long delay.
+This option should be used if it is possible that one or more
+filesystems are in a state such that they will not be able to provide
+statistics without a long delay.

 When this option is specified,
 .Nm df
 When this option is specified,
 .Nm df

-will not request new statistics from the filesystems,
-but will respond with the possibly stale statistics
-that were previously obtained.
+will not request new statistics from the filesystems, but will respond
+with the possibly stale statistics that were previously obtained.
+.It Fl t
+Only print out statistics for filesystems of the specified types.
+The recognized types are:
+ufs, nfs, mfs, lfs, pc, fdesc, portal and kernfs,
+along with the aggregates:
+all (the default),
+local (ufs, mfs, lfs),
+and misc (fdesc, portal, kernfs).
+The string ``no'' may be prepending to a type to get its complement
+(e.g. ``nonfs'' to get non-NFS filesystems).  The first
+.Fl t
+option overrides the default, additional such options will add to
+(or subtract from) the current set of types; e.g. either
+``df -t ufs -t lfs''
+or
+``df -t local -t nomfs''
+will display statistics for UFS and LFS filesystems.
+.El
+.Sh ENVIRONMENTAL VARIABLES
+.Bl -tag -width BLOCKSIZE
+.It Ev BLOCKSIZE
+If the environmental variable
+.Ev BLOCKSIZE
+is set, the block counts will be displayed in units of that size block.
+.El

 .Sh BUGS
 The
 .Fl n
 .Sh BUGS
 The
 .Fl n

-flag is ignored if a file or filesystem is specified.
+and
+.Fl t
+flags are ignored if a file or filesystem is specified.

 .Sh SEE ALSO
 .Xr quota 1 ,
 .Xr statfs 2 ,
 .Sh SEE ALSO
 .Xr quota 1 ,
 .Xr statfs 2 ,


@@ -72,7 +112,5 @@ flag is ignored if a file or filesystem is specified.
 .Sh HISTORY
 A
 .Nm df
 .Sh HISTORY
 A
 .Nm df

-command appeared in Version 6 AT&T Unix as
-df(8) and in Version 7 AT&T Unix as df(1m).
-.\" Just for posterity and perspective, the date on the Version 6
-.\" release manual page was 1/20/73.
+command appeared in
+.At v6 .