1.\" Copyright (c) 1989, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.roff% 5.\" 6.\" @(#)df.1 6.10 (Berkeley) 03/01/92 7.\" 8.Dd 9.Dt DF 1 10.Os BSD 4 11.Sh NAME 12.Nm df 13.Nd display free disk space 14.Sh SYNOPSIS 15.Nm df 16.Op Fl in 17.Op Ar file | Ar filesystem ... 18.Sh DESCRIPTION 19.Nm Df 20displays statistics about the amount of free disk space on the specified 21.Ar filesystem 22or on the filesystem of which 23.Ar file 24is a part. 25Values are displayed in 512-byte per block block counts. 26If neither a file or a filesystem operand is specified, 27statistics for all mounted filesystems are displayed. 28.Pp 29The following options are available: 30.Bl -tag -width Ds 31.It Fl i 32Include statistics on the number of free inodes. 33.It Fl n 34Print out the previously obtained statistics from the filesystems. 35This option should be used if it is possible that one or more 36filesystems are in a state such that they will not be able to provide 37statistics without a long delay. 38When this option is specified, 39.Nm df 40will not request new statistics from the filesystems, but will respond 41with the possibly stale statistics that were previously obtained. 42.El 43.Sh ENVIRONMENTAL VARIABLES 44.Bl -tag -width BLOCKSIZE 45.It Ev BLOCKSIZE 46If the environmental variable 47.Ev BLOCKSIZE 48is set, the block counts will be displayed in units of that size block. 49.El 50.Sh BUGS 51The 52.Fl n 53flag is ignored if a file or filesystem is specified. 54.Sh SEE ALSO 55.Xr quota 1 , 56.Xr statfs 2 , 57.Xr fstatfs 2 , 58.Xr getfsstat 2 , 59.Xr getmntinfo 3 , 60.Xr fstab 5 , 61.Xr mount 8 , 62.Xr quot 8 63.Sh HISTORY 64A 65.Nm df 66command appeared in 67.At v6 . 68