165 lines
5.2 KiB
Groff
165 lines
5.2 KiB
Groff
.\" $NetBSD: df.1,v 1.19 2000/10/15 17:50:10 kleink Exp $
|
|
.\"
|
|
.\" Copyright (c) 1989, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" @(#)df.1 8.2 (Berkeley) 1/13/92
|
|
.\"
|
|
.Dd January 13, 1994
|
|
.Dt DF 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm df
|
|
.Nd display free disk space
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl aiklnP
|
|
.Op Fl t Ar type
|
|
.Op Ar file | Ar file_system ...
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
displays statistics about the amount of free disk space on the specified
|
|
.Ar file_system
|
|
or on the file system of which
|
|
.Ar file
|
|
is a part.
|
|
Values are displayed in 512-byte per block block counts.
|
|
If neither a file or a
|
|
.Ar file_system
|
|
operand is specified,
|
|
statistics for all mounted file systems are displayed
|
|
(subject to the
|
|
.Fl l
|
|
and
|
|
.Fl t
|
|
options below).
|
|
.Pp
|
|
Note that the printed count of available blocks takes
|
|
.Va minfree
|
|
into account, and thus will be negative when the number of free blocks
|
|
on the filesystem is less than
|
|
.Va minfree .
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width Ds
|
|
.It Fl a
|
|
Show all filesystems. By default only filesystems mounted with the
|
|
.Dv MNT_IGNORE
|
|
flag clear are shown.
|
|
.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 l
|
|
Display statistics only about mounted file systems with the
|
|
.Dv MNT_LOCAL
|
|
flag set. If a non-local file system is given as an argument, a
|
|
warning is issued and no information is given on that file system.
|
|
.It Fl n
|
|
Print out the previously obtained statistics from the file systems.
|
|
This option should be used if it is possible that one or more
|
|
file systems are in a state such that they will not be able to provide
|
|
statistics without a long delay.
|
|
When this option is specified,
|
|
.Nm
|
|
will not request new statistics from the file systems, but will respond
|
|
with the possibly stale statistics that were previously obtained.
|
|
.It Fl P
|
|
Produce output in the following portable format:
|
|
.Pp
|
|
If both the
|
|
.Fl P
|
|
and
|
|
.Fl k
|
|
option are specified, the output will be preceeded by the following header
|
|
line, formatted to match the data following it:
|
|
.Bd -literal
|
|
"Filesystem 1024-blocks Used Available Capacity Mounted on\\n"
|
|
.Ed
|
|
.Pp
|
|
If the
|
|
.Fl P
|
|
option is specified without the
|
|
.Fl k
|
|
options, the output will be preceeded by the following header line,
|
|
formatted to matche the data following it:
|
|
.Bd -literal
|
|
"Filesystem <blksize>-blocks Used Available Capacity Mounted on\\n"
|
|
.Ed
|
|
.Pp
|
|
The header line is followed by data formatted as follows:
|
|
.Bd -literal
|
|
"%s %d %d %d %d%% %s\\n", <file system name>, <total space>,
|
|
<space used>, <space free>, <percentage used>,
|
|
<file system root>
|
|
.Ed
|
|
.It Fl t Ar type
|
|
Is used to indicate the actions should only be taken on
|
|
filesystems of the specified type.
|
|
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. If a file system is given on the command line that is not of
|
|
the specified type, a warning is issued and no information is given on
|
|
that file system.
|
|
.El
|
|
.Sh ENVIRONMENT VARIABLES
|
|
.Bl -tag -width BLOCKSIZE
|
|
.It Ev BLOCKSIZE
|
|
If the environment variable
|
|
.Ev BLOCKSIZE
|
|
is set, and the
|
|
.Fl k
|
|
option is not specified, the block counts will be displayed in units of that
|
|
size block.
|
|
.El
|
|
.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 fs 5 ,
|
|
.Xr tunefs 8
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
utility appeared in
|
|
.At v6 .
|