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 8484f22..ab41e96 100644 (file)
--- a/usr/src/bin/df/df.1
+++ b/usr/src/bin/df/df.1
@@ -1,11 +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.

 .\"
 .\"

-.\" %sccs.include.redist.roff%
+.\" 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       6.9 (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 
+.\"     @(#)df.1       8.3 (Berkeley) 5/8/95
+.\"
+.Dd May 8, 1995

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


@@ -13,7 +39,8 @@
 .Nd display free disk space
 .Sh SYNOPSIS
 .Nm df
 .Nd display free disk space
 .Sh SYNOPSIS
 .Nm df

-.Op Fl ikn
+.Op Fl in
+.Op Fl t Ar type

 .Op Ar file | Ar filesystem ...
 .Sh DESCRIPTION
 .Nm Df
 .Op Ar file | Ar filesystem ...
 .Sh DESCRIPTION
 .Nm Df


@@ -22,18 +49,17 @@ displays statistics about the amount of free disk space on the specified
 or on the filesystem of which
 .Ar file
 is a part.
 or on the filesystem of which
 .Ar file
 is a part.

+Values are displayed in 512-byte per block block counts.

 If neither a file or a filesystem operand is specified,
 If neither a file or a filesystem operand is specified,

-statistics for all mounted filesystems are displayed.
+statistics for all mounted filesystems are displayed
+(subject to the
+.Fl t
+option below).

 .Pp
 The following options are available:
 .Bl -tag -width Ds
 .It Fl i
 Include statistics on the number of free inodes.
 .Pp
 The following options are available:
 .Bl -tag -width Ds
 .It Fl i
 Include statistics on the number of free inodes.

-.It Fl k
-By default, all sizes are reported in 512-byte block counts.
-The
-.Fl k
-option causes the numbers to be reported in kilobyte counts.

 .It Fl n
 Print out the previously obtained statistics from the filesystems.
 This option should be used if it is possible that one or more
 .It Fl n
 Print out the previously obtained statistics from the filesystems.
 This option should be used if it is possible that one or more


@@ -43,11 +69,46 @@ 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.
 .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
 .Fl n
 .El
 .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 ,


@@ -56,7 +117,8 @@ flag is ignored if a file or filesystem is specified.
 .Xr getmntinfo 3 ,
 .Xr fstab 5 ,
 .Xr mount 8 ,
 .Xr getmntinfo 3 ,
 .Xr fstab 5 ,
 .Xr mount 8 ,

-.Xr quot 8
+.Xr quot 8 ,
+.Xr sysctl 8

 .Sh HISTORY
 A
 .Nm df
 .Sh HISTORY
 A
 .Nm df