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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
53 or on the file system of which
56 By default block counts are displayed with an assumed block size of
58 If neither a file or a file system operand is specified,
59 statistics for all mounted file systems are displayed
64 The following options are available:
65 .Bl -tag -width indent
69 in a selection of different human and machine readable formats.
72 for details on command line arguments.
74 Show all mount points, including those that were mounted with the
77 This is implied for file systems specified on the command line.
79 Explicitly use 512 byte blocks, overriding any
81 specification from the environment.
82 This is the same as the
87 option overrides this option.
89 Display a grand total.
91 Use 1073741824 byte (1 Gibibyte) blocks rather than the default.
94 specification from the environment.
98 Use unit suffixes: Byte, Kibibyte, Mebibyte, Gibibyte, Tebibyte and
99 Pebibyte (based on powers of 1024) in order to reduce the number of
100 digits to four or fewer.
104 but based on powers of 1000.
106 Include statistics on the number of free and used inodes.
107 In conjunction with the
111 options, the number of inodes is scaled by powers of 1000.
113 Use 1024 byte (1 Kibibyte) blocks rather than the default.
118 specification from the environment.
120 Select locally-mounted file system for display.
121 If used in combination with the
123 option, file system types will be added or excluded acccording to the
124 parameters of that option.
126 Use 1048576 byte (1 Mebibyte) blocks rather than the default.
129 specification from the environment.
131 Print out the previously obtained statistics from the file systems.
132 This option should be used if it is possible that one or more
133 file systems are in a state such that they will not be able to provide
134 statistics without a long delay.
135 When this option is specified,
137 will not request new statistics from the file systems, but will respond
138 with the possibly stale statistics that were previously obtained.
140 Explicitly use 512 byte blocks, overriding any
142 specification from the environment.
143 This is the same as the
148 option overrides this option.
150 Select file systems to display.
151 More than one type may be specified in a comma separated list.
152 The list of file system types can be prefixed with
154 to specify the file system types for which action should
157 If used in combination with the
159 option, the parameters of this option will modify the list of
160 locally-mounted file systems selected by the
166 .Bd -literal -offset indent
170 lists all file systems except those of type NFS and NULLFS.
173 command can be used to find out the types of file systems
174 that are available on the system.
176 Include file system type.
178 (Comma) Print sizes grouped and separated by thousands using the
179 non-monetary separator returned by
181 typically a comma or period.
182 If no locale is set, or the locale does not have a non-monetary separator, this
183 option has no effect.
186 .Bl -tag -width BLOCKSIZE
188 Specifies the units in which to report block counts.
191 which allows units of bytes or numbers scaled with the letters
193 (for multiples of 1024 bytes),
195 (for multiples of 1048576 bytes) or
198 The allowed range is 512 bytes to 1 GB.
199 If the value is outside, it will be set to the appropriate limit.
202 Show human readable free disk space for all mount points including file system
204 .Bd -literal -offset indent
206 Filesystem Type Size Used Avail Capacity Mounted on
207 /dev/ada1p2 ufs 213G 152G 44G 78% /
208 devfs devfs 1.0K 1.0K 0B 100% /dev
209 /dev/ada0p1 ufs 1.8T 168G 1.5T 10% /data
210 linsysfs linsysfs 4.0K 4.0K 0B 100% /compat/linux/sys
211 /dev/da0 msdosfs 7.6G 424M 7.2G 5% /mnt/usb
214 Show previously collected data including inode statistics except for devfs or
215 linsysfs file systems.
218 prefix affects all the file systems in the list and the
220 option can be specified only once:
221 .Bd -literal -offset indent
222 $ df -i -n -t nodevfs,linsysfs
223 Filesystem 1K-blocks Used Avail Capacity iused ifree %iused
225 /dev/ada1p2 223235736 159618992 45757888 78% 1657590 27234568 6% /
226 /dev/ada0p1 1892163184 176319420 1564470712 10% 1319710 243300576 1%
228 /dev/da0 7989888 433664 7556224 5% 0 0 100%
232 Show human readable information for the file system containing the file
234 .Bd -literal -offset indent
236 Filesystem Size Used Avail Capacity Mounted on
237 /dev/ada1p2 213G 152G 44G 78% /
240 Same as above but specifying some file system:
241 .Bd -literal -offset indent
243 Filesystem Size Used Avail Capacity Mounted on
244 /dev/ada1p2 213G 152G 44G 78% /
256 .Xr xo_parse_args 3 ,
263 With the exception of most options,
268 which defines only the
281 flag is ignored if a file or file system is specified.
283 point is not accessible by the user, it is possible that the file system
284 information could be stale.
290 options are identical.
291 The former comes from the BSD tradition, and the latter is required