1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
126 lines
4.3 KiB
Groff
126 lines
4.3 KiB
Groff
.\" Copyright (c) 1989, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)df.1 8.3 (Berkeley) 5/8/95
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.\" $FreeBSD$
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.\"
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.Dd May 8, 1995
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.Dt DF 1
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.Os BSD 4
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.Sh NAME
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.Nm df
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.Nd display free disk space
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.Sh SYNOPSIS
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.Nm df
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.Op Fl ink
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.Op Fl t Ar type
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.Op Ar file | Ar filesystem ...
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.Sh DESCRIPTION
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.Nm
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displays statistics about the amount of free disk space on the specified
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.Ar filesystem
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or on the filesystem of which
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.Ar file
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is a part.
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Values are displayed in 512-byte per block block counts.
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If neither a file or a filesystem operand is specified,
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statistics for all mounted filesystems are displayed
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(subject to the
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.Fl t
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option below).
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.Pp
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The following options are available:
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.Bl -tag -width Ds
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.It Fl i
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Include statistics on the number of free inodes.
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.It Fl k
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Use 1024-byte (1-Kbyte) blocks rather than the default. Note that
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this overrides the
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.Ev BLOCKSIZE
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specification from the environment.
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.It Fl n
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Print out the previously obtained statistics from the filesystems.
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This option should be used if it is possible that one or more
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filesystems are in a state such that they will not be able to provide
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statistics without a long delay.
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When this option is specified,
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.Nm df
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will not request new statistics from the filesystems, but will respond
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with the possibly stale statistics that were previously obtained.
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.It Fl t
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Only print out statistics for filesystems of the specified types.
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The recognized types are:
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ufs, nfs, mfs, lfs, msdos, fdesc, portal, kernfs, procfs, afs, isofs,
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iso9660fs, cdfs, and cd9660,
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along with the aggregates:
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all (the default),
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local (ufs, mfs, lfs, msdos, cd9660),
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and misc (fdesc, portal, kernfs, procfs).
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The names isofs, iso9660fs, cdfs, and cd9660 are aliases to each other
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all of them refering to the same type of file system.
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The string ``no'' may be prepended to a type to get its complement
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(e.g. ``nonfs'' to get non-NFS filesystems). The first
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.Fl t
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option overrides the default, additional such options will add to
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(or subtract from) the current set of types; e.g. either
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``df -t ufs -t lfs''
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or
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``df -t local -t nomfs''
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will display statistics for UFS and LFS filesystems.
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.El
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.Sh ENVIRONMENT VARIABLES
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.Bl -tag -width BLOCKSIZE
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.It Ev BLOCKSIZE
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If the environmental variable
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.Ev BLOCKSIZE
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is set, the block counts will be displayed in units of that size block.
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.El
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.Sh BUGS
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The
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.Fl n
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and
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.Fl t
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flags are ignored if a file or filesystem is specified.
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.Sh SEE ALSO
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.Xr quota 1 ,
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.Xr fstatfs 2 ,
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.Xr getfsstat 2 ,
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.Xr statfs 2 ,
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.Xr getmntinfo 3 ,
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.Xr fstab 5 ,
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.Xr mount 8 ,
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.Xr quot 8
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.Sh HISTORY
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A
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.Nm df
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command appeared in
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.At v1 .
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