.\" Copyright (c) 1989, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
.\" %sccs.include.redist.roff%
.\" @(#)df.1 8.3 (Berkeley) %G%
.Nd display free disk space
.Op Ar file | Ar filesystem ...
displays statistics about the amount of free disk space on the specified
or on the filesystem of which
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
The following options are available:
Include statistics on the number of free inodes.
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.
When this option is specified,
will not request new statistics from the filesystems, but will respond
with the possibly stale statistics that were previously obtained.
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
to specify the filesystem types for which action should
.Bd -literal -offset indent
lists all filesystems except those of type
command can be used to find out the types of filesystems
that are available on the system:
.Bd -literal -offset indent
.Sh ENVIRONMENTAL VARIABLES
.Bl -tag -width BLOCKSIZE
If the environmental variable
is set, the block counts will be displayed in units of that size block.
flags are ignored if a file or filesystem is specified.
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