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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
43 .Op Ar file | filesystem ...
48 displays statistics about the amount of free disk space on the specified
50 or on the file system of which
53 By default block counts are displayed with an assumed block size of
55 If neither a file or a file system operand is specified,
56 statistics for all mounted file systems are displayed
61 The following options are available:
62 .Bl -tag -width indent
64 Show all mount points, including those that were mounted with the
67 This is implied for file systems specified on the command line.
69 Explicitly use 512 byte blocks, overriding any
71 specification from the environment.
72 This is the same as the
77 option overrides this option.
79 Display a grand total.
81 Use 1073741824 byte (1 Gibibyte) blocks rather than the default.
84 specification from the environment.
88 Use unit suffixes: Byte, Kibibyte, Mebibyte, Gibibyte, Tebibyte and
89 Pebibyte (based on powers of 1024) in order to reduce the number of
90 digits to four or fewer.
94 Use unit suffixes: Byte, Kilobyte, Megabyte,
95 Gigabyte, Terabyte and Petabyte (based on powers of 1000) in order to
97 digits to four or fewer.
99 Include statistics on the number of free and used inodes.
100 In conjunction with the
104 options, the number of inodes is scaled by powers of 1000.
106 Use 1024 byte (1 Kibibyte) blocks rather than the default.
111 specification from the environment.
113 Only display information about locally-mounted file systems.
115 Use 1048576 byte (1 Mebibyte) blocks rather than the default.
118 specification from the environment.
120 Print out the previously obtained statistics from the file systems.
121 This option should be used if it is possible that one or more
122 file systems are in a state such that they will not be able to provide
123 statistics without a long delay.
124 When this option is specified,
126 will not request new statistics from the file systems, but will respond
127 with the possibly stale statistics that were previously obtained.
129 Explicitly use 512 byte blocks, overriding any
131 specification from the environment.
132 This is the same as the
137 option overrides this option.
139 Only print out statistics for file systems of the specified types.
140 More than one type may be specified in a comma separated list.
141 The list of file system types can be prefixed with
143 to specify the file system types for which action should
149 .Bd -literal -offset indent
153 lists all file systems except those of type
159 command can be used to find out the types of file systems
160 that are available on the system.
162 Include file system type.
164 (Comma) Print sizes grouped and separated by thousands using the
165 non-monetary separator returned by
167 typically a comma or period.
168 If no locale is set, or the locale does not have a non-monetary separator, this
169 option has no effect.
172 .Bl -tag -width BLOCKSIZE
174 Specifies the units in which to report block counts.
177 which allows units of bytes or numbers scaled with the letters
179 (for multiples of 1024 bytes),
181 (for multiples of 1048576 bytes) or
184 The allowed range is 512 bytes to 1 GB.
185 If the value is outside, it will be set to the appropriate limit.
200 With the exception of most options,
205 which defines only the
218 flag is ignored if a file or file system is specified.
220 point is not accessible by the user, it is possible that the file system
221 information could be stale.
227 options are identical.
228 The former comes from the BSD tradition, and the latter is required