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32 .\" @(#)df.1 8.3 (Berkeley) 5/8/95
33 .\" $FreeBSD: src/bin/df/df.1,v 1.18.2.7 2002/04/22 22:17:36 keramida Exp $
40 .Nd display free disk space
50 .Op Ar file | filesystem ...
60 .Op Ar file | filesystem ...
65 displays statistics about the amount of free disk space on the specified
67 or on the filesystem of which
70 Values are displayed in 512-byte per block counts.
71 If neither a file or a filesystem operand is specified,
72 statistics for all mounted filesystems are displayed
77 The following options are available:
80 Show all mount points, including those that were mounted with the MNT_IGNORE
83 Use (the default) 512-byte blocks.
84 This is only useful as a way to override an
86 specification from the environment.
88 Use 1073741824-byte (1-Gbyte) blocks rather than the default.
89 Note that this overrides the
91 specification from the environment.
93 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
94 Gigabyte, Terabyte and Petabyte in order to reduce the number of
95 digits to three or less using base 10 for sizes.
97 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
98 Gigabyte, Terabyte and Petabyte in order to reduce the number of
99 digits to three or less using base 2 for sizes.
101 Include statistics on the number of free inodes.
103 Use 1024-byte (1-Kbyte) blocks, rather than the default.
104 Note that this overrides the
106 specification from the environment.
108 Only display information about locally-mounted filesystems.
110 Use 1048576-byte (1-Mbyte) blocks rather than the default. Note that
113 specification from the environment.
115 Print out the previously obtained statistics from the filesystems.
116 This option should be used if it is possible that one or more
117 filesystems are in a state such that they will not be able to provide
118 statistics without a long delay.
119 When this option is specified,
121 will not request new statistics from the filesystems, but will respond
122 with the possibly stale statistics that were previously obtained.
124 Use (the default) 512-byte blocks.
125 This is only useful as a way to override an
127 specification from the environment.
129 Only print out statistics for filesystems of the specified types.
130 More than one type may be specified in a comma separated list.
131 The list of filesystem types can be prefixed with
133 to specify the filesystem types for which action should
139 .Bd -literal -offset indent
143 lists all filesystems except those of type
149 command can be used to find out the types of filesystems
150 that are available on the system.
152 If used with no arguments,
153 this option is a no-op
154 (Mac OS X already prints the total allocated-space figures).
155 If used with an argument, it acts like
157 but this usage is deprecated and should not be relied upon.
160 .Bl -tag -width BLOCKSIZE
162 If the environment variable
164 is set, the block counts will be displayed in units of that size block.
171 flags are ignored if a file or filesystem is specified.
172 .Sh LEGACY DESCRIPTION
173 The "capacity" percentage is normally rounded up to the next higher integer.
174 In legacy mode, it is rounded down to the next lower integer.
180 option are used together,
181 sizes are reported in 1024-blocks.
182 In legacy mode, when the
186 option are used together,
187 the last option specified dictates the reported block size.
191 option is normally a no-op
192 (Mac OS X already prints the total allocated-space figures).
193 In legacy mode, it is equivalent to
196 For more information about legacy mode, see