BSD 4_4_Lite2 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 816a9d3..ab41e96 100644 (file)
--- a/usr/src/bin/df/df.1
+++ b/usr/src/bin/df/df.1
@@ -1,66 +1,126 @@
-.\" Copyright (c) 1989 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 the above copyright notice and this paragraph are
-.\" duplicated in all such forms and that any documentation,
-.\" advertising materials, and other materials related to such
-.\" distribution and use acknowledge that the software was developed
-.\" by the University of California, Berkeley.  The name of the
-.\" University may not 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        6.4 (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.

 .\"
 .\"

-.TH DF 1 ""
-.UC 4
-.SH NAME
-df \- disk free
-.SH SYNOPSIS
-.B df
-[
-.B \-ikn
-] [ file | filesystem ... ]
-.SH DESCRIPTION
-.I Df
-displays statistics on the amount of free disk space on the
-filesystem
-.I filesystem
+.\"     @(#)df.1       8.3 (Berkeley) 5/8/95
+.\"
+.Dd May 8, 1995
+.Dt DF 1
+.Os BSD 4
+.Sh NAME
+.Nm df
+.Nd display free disk space
+.Sh SYNOPSIS
+.Nm df
+.Op Fl in
+.Op Fl t Ar type
+.Op Ar file | Ar filesystem ...
+.Sh DESCRIPTION
+.Nm Df
+displays statistics about the amount of free disk space on the specified
+.Ar filesystem

 or on the filesystem of which
 or on the filesystem of which

-.I file
+.Ar file

 is a part.
 is a part.

-If neither a file or a filesystem is specified,
-statistics for all mounted filesystems are 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:
 The following options are available:

-.TP
--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
--k
-By default, all reported numbers are in 512-byte blocks.
-This causes the numbers to be reported in kilobytes.
-.TP
--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,
 When this option is specified,

-.I df
-will not request new statistics from the filesystems,
-but will respond with the possibly stale statistics
-that were previously obtained.
-.SH BUGS
+.Nm df
+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.
+More than one type may be specified in a comma separated list.
+The list of filesystem types can be prefixed with
+.Dq no
+to specify the filesystem types for which action should
+.Em not
+be taken.
+For example, the
+.Nm df
+command:
+.Bd -literal -offset indent
+df -t nonfs,mfs
+.Ed
+.Pp
+lists all filesystems except those of type
+.Tn NFS
+and
+.Tn MFS .
+The
+.Xr sysctl 8
+command can be used to find out the types of filesystems
+that are available on the system:
+.Bd -literal -offset indent
+sysctl vfs
+.Ed
+.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
 The

-.I -n
-flag is ignored if a file or filesystem is specified.
-.SH "SEE ALSO"
-quota(1),
-statfs(2), fstatfs(2), getfsstat(2),
-getmntinfo(3),
-fstab(5),
-mount(8), quot(8)
+.Fl n
+and
+.Fl t
+flags are ignored if a file or filesystem is specified.
+.Sh SEE ALSO
+.Xr quota 1 ,
+.Xr statfs 2 ,
+.Xr fstatfs 2 ,
+.Xr getfsstat 2 ,
+.Xr getmntinfo 3 ,
+.Xr fstab 5 ,
+.Xr mount 8 ,
+.Xr quot 8 ,
+.Xr sysctl 8
+.Sh HISTORY
+A
+.Nm df
+command appeared in
+.At v6 .