1.\" $NetBSD: df.1,v 1.56 2021/01/06 20:38:09 ginsbach Exp $ 2.\" 3.\" Copyright (c) 1989, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)df.1 8.2 (Berkeley) 1/13/92 31.\" 32.Dd January 2, 2021 33.Dt DF 1 34.Os 35.Sh NAME 36.Nm df 37.Nd display free disk space 38.Sh SYNOPSIS 39.Nm 40.Op Fl acglnW 41.Op Fl Ghkm | Fl ihkm | Fl Pk 42.Op Fl t Ar type 43.Op Ar file | Ar file_system ... 44.Sh DESCRIPTION 45.Nm 46displays statistics about the amount of free disk space on the specified 47.Ar file_system 48or on the file system of which 49.Ar file 50is a part. 51By default, all sizes are reported in 512-byte block counts. 52If neither a file or a 53.Ar file_system 54operand is specified, 55statistics for all mounted file systems are displayed 56(subject to the 57.Fl l 58and 59.Fl t 60options below). 61.Pp 62Note that the printed count of available blocks takes 63.Va minfree 64into account, and thus will be negative when the number of free blocks 65on the file system is less than 66.Va minfree . 67.Pp 68The following options are available: 69.Bl -tag -width Ds 70.It Fl a 71Show all mount points, 72including those that were mounted with the 73.Dv MNT_IGNORE 74flag. 75.It Fl c 76Display a grand total for all shown mount points. 77.It Fl G 78Display all the fields of the structure(s) returned by 79.Xr statvfs 2 . 80This option cannot be used with the 81.Fl i 82or 83.Fl P 84options, and it is modelled after the Solaris 85.Fl g 86option. 87This option will override the 88.Fl g , 89.Fl h , 90.Fl k , 91and 92.Fl m 93options, as well as any setting of 94.Ev BLOCKSIZE . 95.It Fl g 96The 97.Fl g 98option causes the numbers to be reported in gigabytes (1024*1024*1024 99bytes). 100.It Fl h 101"Human-readable" output. 102Use unit suffixes: Byte, Kilobyte, Megabyte, 103Gigabyte, Terabyte, Petabyte, Exabyte in order to reduce the number of 104digits to four or less. 105.It Fl i 106Include statistics on the number of free inodes. 107.It Fl k 108By default, all sizes are reported in 512-byte block counts. 109The 110.Fl k 111option causes the numbers to be reported in kilobytes (1024 bytes). 112.It Fl l 113Display statistics only about mounted file systems with the 114.Dv MNT_LOCAL 115flag set. 116If a non-local file system is given as an argument, a 117warning is issued and no information is given on that file system. 118.It Fl m 119The 120.Fl m 121option causes the numbers to be reported in megabytes (1024*1024 bytes). 122.It Fl n 123Print out the previously obtained statistics from the file systems. 124This option should be used if it is possible that one or more 125file systems are in a state such that they will not be able to provide 126statistics without a long delay. 127When this option is specified, 128.Nm 129will not request new statistics from the file systems, but will respond 130with the possibly stale statistics that were previously obtained. 131.It Fl P 132Produce output in the following portable format: 133.Pp 134If both the 135.Fl P 136and 137.Fl k 138option are specified, the output will be preceded by the following header 139line, formatted to match the data following it: 140.Bd -literal 141"Filesystem 1024-blocks Used Available Capacity Mounted on\en" 142.Ed 143.Pp 144If the 145.Fl P 146option is specified without the 147.Fl k 148options, the output will be preceded by the following header line, 149formatted to match the data following it: 150.Bd -literal 151"Filesystem <blksize>-blocks Used Available Capacity Mounted on\en" 152.Ed 153.Pp 154The header line is followed by data formatted as follows: 155.Bd -literal 156"%s %d %d %d %d%% %s\en", <file system name>, <total space>, 157 <space used>, <space free>, <percentage used>, 158 <file system root> 159.Ed 160.Pp 161Note that the 162.Fl i 163option may not be specified with 164.Fl P . 165.It Fl t Ar type 166Is used to indicate the actions should only be taken on 167file systems of the specified type. 168More than one type may be specified in a comma-separated list. 169The list of file system types can be prefixed with 170.Dq no 171to specify the file system types for which action should 172.Em not 173be taken. 174If a file system is given on the command line that is not of 175the specified type, a warning is issued and no information is given on 176that file system. 177.It Fl W 178Print the wedge name instead of the mounted from device for wedges. 179The wedge name is prefixed with 180.Dq NAME= 181as in 182.Xr fstab 5 . 183If the wedge information cannot be obtained for one or more 184file systems, the 185.Fl W 186option is silently ignored for those file systems. 187.El 188.Sh ENVIRONMENT 189.Bl -tag -width BLOCKSIZE 190.It Ev BLOCKSIZE 191If the environment variable 192.Ev BLOCKSIZE 193is set, and the 194.Fl g , 195.Fl h , 196.Fl k 197and 198.Fl m 199options are not specified, the block counts will be displayed in units of that 200size block. 201.El 202.Sh SEE ALSO 203.Xr quota 1 , 204.Xr fstatvfs 2 , 205.Xr getvfsstat 2 , 206.Xr statvfs 2 , 207.Xr getbsize 3 , 208.Xr getmntinfo 3 , 209.Xr fs 5 , 210.Xr fstab 5 , 211.Xr mount 8 , 212.Xr quot 8 , 213.Xr tunefs 8 214.Sh HISTORY 215A 216.Nm 217utility appeared in 218.At v1 . 219