1.\" Copyright (c) 1989, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)df.1 6.9 (Berkeley) 6/17/91 33.\" $Id: df.1,v 1.4 1993/08/01 07:48:50 mycroft Exp $ 34.\" 35.Dd June 17, 1991 36.Dt DF 1 37.Os BSD 4 38.Sh NAME 39.Nm df 40.Nd display free disk space 41.Sh SYNOPSIS 42.Nm df 43.Op Fl ikn 44.Op Ar file | Ar filesystem ... 45.Sh DESCRIPTION 46.Nm Df 47displays statistics about the amount of free disk space on the specified 48.Ar filesystem 49or on the filesystem of which 50.Ar file 51is a part. 52If neither a file or a filesystem operand is specified, 53statistics for all mounted filesystems are displayed. 54.Pp 55The following options are available: 56.Bl -tag -width Ds 57.It Fl i 58Include statistics on the number of free inodes. 59.It Fl k 60By default, all sizes are reported in 512-byte block counts. 61The 62.Fl k 63option causes the numbers to be reported in kilobyte counts. 64.It Fl n 65Print out the previously obtained statistics from the filesystems. 66This option should be used if it is possible that one or more 67filesystems are in a state such that they will not be able to provide 68statistics without a long delay. 69When this option is specified, 70.Nm df 71will not request new statistics from the filesystems, but will respond 72with the possibly stale statistics that were previously obtained. 73.El 74.Sh BUGS 75The 76.Fl n 77flag is ignored if a file or filesystem is specified. 78.Sh SEE ALSO 79.Xr quota 1 , 80.Xr statfs 2 , 81.Xr fstatfs 2 , 82.Xr getfsstat 2 , 83.Xr getmntinfo 3 , 84.Xr fstab 5 , 85.Xr mount 8 , 86.Xr quot 8 87.Sh HISTORY 88A 89.Nm df 90command appeared in 91.At v6 . 92