1.\" Copyright (c) 1989, 1990, 1993 2.\" The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)df.1 8.3 (Berkeley) 5/8/95 29.\" $FreeBSD: src/bin/df/df.1,v 1.18.2.9 2003/05/07 23:56:14 trhodes Exp $ 30.\" 31.Dd March 17, 2017 32.Dt DF 1 33.Os 34.Sh NAME 35.Nm df 36.Nd display free disk space 37.Sh SYNOPSIS 38.Nm 39.Oo 40.Fl b | h | H | k | 41.Fl m | P 42.Oc 43.Op Fl ailnT 44.Op Fl t Ar type 45.Op Ar file | filesystem ... 46.Sh DESCRIPTION 47The 48.Nm 49utility 50displays statistics about the amount of free disk space on the specified 51.Ar file system 52or on the file system of which 53.Ar file 54is a part. 55Values are displayed in 512-byte per block counts. 56If neither a file or a file system operand is specified, 57statistics for all mounted file systems are displayed 58(subject to the 59.Fl t 60option below). 61.Pp 62The following options are available: 63.Bl -tag -width Ds 64.It Fl a 65Show all mount points, including those that were mounted with the 66.Cm ignore 67option. 68.It Fl b 69Use 512-byte blocks rather than the default. Note that 70this overrides the 71.Ev BLOCKSIZE 72specification from the environment. 73.It Fl g 74Use 1073741824-byte (1-Gbyte) blocks rather than the default. Note that 75this overrides the 76.Ev BLOCKSIZE 77specification from the environment. 78.It Fl H 79"Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, 80Gigabyte, Terabyte and Petabyte in order to reduce the number of 81digits to four or fewer using base 10 for sizes. 82.It Fl h 83"Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, 84Gigabyte, Terabyte and Petabyte in order to reduce the number of 85digits to four or fewer using base 2 for sizes. 86.It Fl i 87Include statistics on the number of free and used inodes. 88In conjunction with the 89.Fl h 90or 91.Fl H 92options, the number of inodes is scaled by powers of 1000. 93.It Fl k 94Use 1024-byte (1-Kbyte) blocks rather than the default. Note that 95this overrides the 96.Ev BLOCKSIZE 97specification from the environment. 98.It Fl l 99Only display information about locally-mounted file systems. 100.It Fl m 101Use 1048576-byte (1-Mbyte) blocks rather than the default. Note that 102this overrides the 103.Ev BLOCKSIZE 104specification from the environment. 105.It Fl n 106Print out the previously obtained statistics from the file systems. 107This option should be used if it is possible that one or more 108file systems are in a state such that they will not be able to provide 109statistics without a long delay. 110When this option is specified, 111.Nm 112will not request new statistics from the file systems, but will respond 113with the possibly stale statistics that were previously obtained. 114.It Fl P 115Use POSIX compliant output of 512-byte blocks rather than the default. 116Note that this overrides the 117.Ev BLOCKSIZE 118specification from the environment. 119.It Fl t 120Only print out statistics for file systems of the specified types. 121More than one type may be specified in a comma separated list. 122The list of file system types can be prefixed with 123.Dq no 124to specify the file system types for which action should 125.Em not 126be taken. 127For example, the 128.Nm 129command: 130.Bd -literal -offset indent 131df -t nonfs,null 132.Ed 133.Pp 134lists all file systems except those of type 135.Tn NFS 136and 137.Tn NULLFS . 138The 139.Xr lsvfs 1 140command can be used to find out the types of file systems 141that are available on the system. 142.It Fl T 143Include file system type. 144.El 145.Sh ENVIRONMENT 146.Bl -tag -width BLOCKSIZE 147.It Ev BLOCKSIZE 148If the environment variable 149.Ev BLOCKSIZE 150is set, the block counts will be displayed in units of that size block. 151.El 152.Sh SEE ALSO 153.Xr lsvfs 1 , 154.Xr quota 1 , 155.Xr fstatfs 2 , 156.Xr getfsstat 2 , 157.Xr statfs 2 , 158.Xr getmntinfo 3 , 159.Xr fstab 5 , 160.Xr mount 8 , 161.Xr quot 8 162.Sh HISTORY 163A 164.Nm 165command appeared in 166.At v1 . 167.Sh BUGS 168The 169.Fl n 170and 171.Fl t 172flags are ignored if a file or file system is specified. 173