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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.
112 In case the filesystem has no inodes then
114 is displayed instead of the usage percentage.
116 Use 1024 byte (1 Kibibyte) blocks rather than the default.
121 specification from the environment.
123 Select locally-mounted file system for display.
124 If used in combination with the
126 option, file system types will be added or excluded acccording to the
127 parameters of that option.
129 Use 1048576 byte (1 Mebibyte) blocks rather than the default.
132 specification from the environment.
134 Print out the previously obtained statistics from the file systems.
135 This option should be used if it is possible that one or more
136 file systems are in a state such that they will not be able to provide
137 statistics without a long delay.
138 When this option is specified,
140 will not request new statistics from the file systems, but will respond
141 with the possibly stale statistics that were previously obtained.
143 Explicitly use 512 byte blocks, overriding any
145 specification from the environment.
146 This is the same as the
151 option overrides this option.
153 Select file systems to display.
154 More than one type may be specified in a comma separated list.
155 The list of file system types can be prefixed with
157 to specify the file system types for which action should
160 If used in combination with the
162 option, the parameters of this option will modify the list of
163 locally-mounted file systems selected by the
169 .Bd -literal -offset indent
173 lists all file systems except those of type NFS and NULLFS.
176 command can be used to find out the types of file systems
177 that are available on the system.
179 Include file system type.
181 (Comma) Print sizes grouped and separated by thousands using the
182 non-monetary separator returned by
184 typically a comma or period.
185 If no locale is set, or the locale does not have a non-monetary separator, this
186 option has no effect.
189 .Bl -tag -width BLOCKSIZE
191 Specifies the units in which to report block counts.
194 which allows units of bytes or numbers scaled with the letters
196 (for multiples of 1024 bytes),
198 (for multiples of 1048576 bytes) or
201 The allowed range is 512 bytes to 1 GB.
202 If the value is outside, it will be set to the appropriate limit.
205 Show human readable free disk space for all mount points including file system
207 .Bd -literal -offset indent
209 Filesystem Type Size Used Avail Capacity Mounted on
210 /dev/ada1p2 ufs 213G 152G 44G 78% /
211 devfs devfs 1.0K 1.0K 0B 100% /dev
212 /dev/ada0p1 ufs 1.8T 168G 1.5T 10% /data
213 linsysfs linsysfs 4.0K 4.0K 0B 100% /compat/linux/sys
214 /dev/da0 msdosfs 7.6G 424M 7.2G 5% /mnt/usb
217 Show previously collected data including inode statistics except for devfs or
218 linsysfs file systems.
221 prefix affects all the file systems in the list and the
223 option can be specified only once:
224 .Bd -literal -offset indent
225 $ df -i -n -t nodevfs,linsysfs
226 Filesystem 1K-blocks Used Avail Capacity iused ifree %iused
228 /dev/ada1p2 223235736 159618992 45757888 78% 1657590 27234568 6% /
229 /dev/ada0p1 1892163184 176319420 1564470712 10% 1319710 243300576 1%
231 /dev/da0 7989888 433664 7556224 5% 0 0 100%
235 Show human readable information for the file system containing the file
237 .Bd -literal -offset indent
239 Filesystem Size Used Avail Capacity Mounted on
240 /dev/ada1p2 213G 152G 44G 78% /
243 Same as above but specifying some file system:
244 .Bd -literal -offset indent
246 Filesystem Size Used Avail Capacity Mounted on
247 /dev/ada1p2 213G 152G 44G 78% /
250 For non-Unix file systems, the reported values of used and free inodes
251 may have a different meaning than that of used and available files and
253 An example is msdosfs, which in the case of FAT12 or FAT16 file systems
254 reports the number of available and free root directory entries instead
257 where 1 to 21 such directory entries are required to store
258 each file or directory name or disk label
270 .Xr xo_parse_args 3 ,
277 With the exception of most options,
282 which defines only the
295 flag is ignored if a file or file system is specified.
297 point is not accessible by the user, it is possible that the file system
298 information could be stale.
304 options are identical.
305 The former comes from the BSD tradition, and the latter is required