2 .\" Copyright (c) 1989, 1990, 1993
3 .\" The Regents of the University of California. All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
11 .\" notice, this list of conditions and the following disclaimer in the
12 .\" documentation and/or other materials provided with the distribution.
13 .\" 4. Neither the name of the University nor the names of its contributors
14 .\" may be used to endorse or promote products derived from this software
15 .\" without specific prior written permission.
17 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 .\" @(#)df.1 8.3 (Berkeley) 5/8/95
37 .Nd display free disk space
41 .Op Fl b | g | H | h | k | m | P
45 .Op Ar file | filesystem ...
50 displays statistics about the amount of free disk space on the specified
52 or on the file system of which
55 By default block counts are displayed with an assumed block size of
57 If neither a file or a file system operand is specified,
58 statistics for all mounted file systems are displayed
63 The following options are available:
64 .Bl -tag -width indent
68 in a selection of different human and machine readable formats.
71 for details on command line arguments.
73 Show all mount points, including those that were mounted with the
76 This is implied for file systems specified on the command line.
78 Explicitly use 512 byte blocks, overriding any
80 specification from the environment.
81 This is the same as the
86 option overrides this option.
88 Display a grand total.
90 Use 1073741824 byte (1 Gibibyte) blocks rather than the default.
93 specification from the environment.
97 Use unit suffixes: Byte, Kibibyte, Mebibyte, Gibibyte, Tebibyte and
98 Pebibyte (based on powers of 1024) in order to reduce the number of
99 digits to four or fewer.
103 Use unit suffixes: Byte, Kilobyte, Megabyte,
104 Gigabyte, Terabyte and Petabyte (based on powers of 1000) in order to
106 digits to four or fewer.
108 Include statistics on the number of free and used inodes.
109 In conjunction with the
113 options, the number of inodes is scaled by powers of 1000.
115 Use 1024 byte (1 Kibibyte) blocks rather than the default.
120 specification from the environment.
122 Only display information about locally-mounted file systems.
124 Use 1048576 byte (1 Mebibyte) blocks rather than the default.
127 specification from the environment.
129 Print out the previously obtained statistics from the file systems.
130 This option should be used if it is possible that one or more
131 file systems are in a state such that they will not be able to provide
132 statistics without a long delay.
133 When this option is specified,
135 will not request new statistics from the file systems, but will respond
136 with the possibly stale statistics that were previously obtained.
138 Explicitly use 512 byte blocks, overriding any
140 specification from the environment.
141 This is the same as the
146 option overrides this option.
148 Only print out statistics for file systems of the specified types.
149 More than one type may be specified in a comma separated list.
150 The list of file system types can be prefixed with
152 to specify the file system types for which action should
158 .Bd -literal -offset indent
162 lists all file systems except those of type
168 command can be used to find out the types of file systems
169 that are available on the system.
171 Include file system type.
173 (Comma) Print sizes grouped and separated by thousands using the
174 non-monetary separator returned by
176 typically a comma or period.
177 If no locale is set, or the locale does not have a non-monetary separator, this
178 option has no effect.
181 .Bl -tag -width BLOCKSIZE
183 Specifies the units in which to report block counts.
186 which allows units of bytes or numbers scaled with the letters
188 (for multiples of 1024 bytes),
190 (for multiples of 1048576 bytes) or
193 The allowed range is 512 bytes to 1 GB.
194 If the value is outside, it will be set to the appropriate limit.
206 .Xr xo_parse_args 3 ,
213 With the exception of most options,
218 which defines only the
231 flag is ignored if a file or file system is specified.
233 point is not accessible by the user, it is possible that the file system
234 information could be stale.
240 options are identical.
241 The former comes from the BSD tradition, and the latter is required