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29 .\" @(#)df.1 8.3 (Berkeley) 5/8/95
37 .Nd display free disk space
40 .Op Fl b | g | H | h | k | m | P
44 .Op Ar file | filesystem ...
49 displays statistics about the amount of free disk space on the specified
51 or on the file system of which
54 By default block counts are displayed with an assumed block size of
56 If neither a file or a file system operand is specified,
57 statistics for all mounted file systems are displayed
62 The following options are available:
63 .Bl -tag -width indent
65 Show all mount points, including those that were mounted with the
68 This is implied for file systems specified on the command line.
70 Explicitly use 512 byte blocks, overriding any
72 specification from the environment.
73 This is the same as the
78 option overrides this option.
80 Display a grand total.
82 Use 1073741824 byte (1 Gibibyte) blocks rather than the default.
85 specification from the environment.
89 Use unit suffixes: Byte, Kibibyte, Mebibyte, Gibibyte, Tebibyte and
90 Pebibyte (based on powers of 1024) in order to reduce the number of
91 digits to four or fewer.
95 Use unit suffixes: Byte, Kilobyte, Megabyte,
96 Gigabyte, Terabyte and Petabyte (based on powers of 1000) in order to
98 digits to four or fewer.
100 Include statistics on the number of free and used inodes.
101 In conjunction with the
105 options, the number of inodes is scaled by powers of 1000.
107 Use 1024 byte (1 Kibibyte) blocks rather than the default.
112 specification from the environment.
114 Only display information about locally-mounted file systems.
116 Use 1048576 byte (1 Mebibyte) blocks rather than the default.
119 specification from the environment.
121 Print out the previously obtained statistics from the file systems.
122 This option should be used if it is possible that one or more
123 file systems are in a state such that they will not be able to provide
124 statistics without a long delay.
125 When this option is specified,
127 will not request new statistics from the file systems, but will respond
128 with the possibly stale statistics that were previously obtained.
130 Explicitly use 512 byte blocks, overriding any
132 specification from the environment.
133 This is the same as the
138 option overrides this option.
140 Only print out statistics for file systems of the specified types.
141 More than one type may be specified in a comma separated list.
142 The list of file system types can be prefixed with
144 to specify the file system types for which action should
150 .Bd -literal -offset indent
154 lists all file systems except those of type
160 command can be used to find out the types of file systems
161 that are available on the system.
163 Include file system type.
165 (Comma) Print sizes grouped and separated by thousands using the
166 non-monetary separator returned by
168 typically a comma or period.
169 If no locale is set, or the locale does not have a non-monetary separator, this
170 option has no effect.
173 .Bl -tag -width BLOCKSIZE
175 Specifies the units in which to report block counts.
178 which allows units of bytes or numbers scaled with the letters
180 (for multiples of 1024 bytes),
182 (for multiples of 1048576 bytes) or
185 The allowed range is 512 bytes to 1 GB.
186 If the value is outside, it will be set to the appropriate limit.
203 With the exception of most options,
208 which defines only the
221 flag is ignored if a file or file system is specified.
223 point is not accessible by the user, it is possible that the file system
224 information could be stale.
230 options are identical.
231 The former comes from the BSD tradition, and the latter is required