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.\" @(#)df.1 8.2 (Berkeley) 1/13/94
.Dd January 13, 1994
.Dt DF 1
.Os BSD 4
.Nd display free disk space
.Op Fl in
.Op Fl t Ar type
.Op Ar file | Ar filesystem ...
displays statistics about the amount of free disk space on the specified
or on the filesystem of which
is a part.
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
The following options are available:
.Bl -tag -width Ds
.It Fl i
Include statistics on the number of free inodes.
.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
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.
.It Fl t
Only print out statistics for filesystems of the specified types.
The recognized types are:
ufs, nfs, mfs, lfs, msdos, fdesc, portal, kernfs, procfs, afs and isofs.
along with the aggregates:
all (the default),
local (ufs, mfs, lfs, msdos, isofs),
and misc (fdesc, portal, kernfs, procfs).
The string ``no'' may be prepending to a type to get its complement
(e.g. ``nonfs'' to get non-NFS filesystems). The first
option overrides the default, additional such options will add to
(or subtract from) the current set of types; e.g. either
``df -t ufs -t lfs''
``df -t local -t nomfs''
will display statistics for UFS and LFS filesystems.
.Sh ENVIRONMENTAL VARIABLES
.Bl -tag -width BLOCKSIZE
.It Ev 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.
.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
command appeared in
.At v6 .