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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 Only display information about locally-mounted file systems.
122 Use 1048576 byte (1 Mebibyte) blocks rather than the default.
125 specification from the environment.
127 Print out the previously obtained statistics from the file systems.
128 This option should be used if it is possible that one or more
129 file systems are in a state such that they will not be able to provide
130 statistics without a long delay.
131 When this option is specified,
133 will not request new statistics from the file systems, but will respond
134 with the possibly stale statistics that were previously obtained.
136 Explicitly use 512 byte blocks, overriding any
138 specification from the environment.
139 This is the same as the
144 option overrides this option.
146 Only print out statistics for file systems of the specified types.
147 More than one type may be specified in a comma separated list.
148 The list of file system types can be prefixed with
150 to specify the file system types for which action should
156 .Bd -literal -offset indent
160 lists all file systems except those of type NFS and NULLFS.
163 command can be used to find out the types of file systems
164 that are available on the system.
166 Include file system type.
168 (Comma) Print sizes grouped and separated by thousands using the
169 non-monetary separator returned by
171 typically a comma or period.
172 If no locale is set, or the locale does not have a non-monetary separator, this
173 option has no effect.
176 .Bl -tag -width BLOCKSIZE
178 Specifies the units in which to report block counts.
181 which allows units of bytes or numbers scaled with the letters
183 (for multiples of 1024 bytes),
185 (for multiples of 1048576 bytes) or
188 The allowed range is 512 bytes to 1 GB.
189 If the value is outside, it will be set to the appropriate limit.
192 Show human readable free disk space for all mount points including file system
194 .Bd -literal -offset indent
196 Filesystem Type Size Used Avail Capacity Mounted on
197 /dev/ada1p2 ufs 213G 152G 44G 78% /
198 devfs devfs 1.0K 1.0K 0B 100% /dev
199 /dev/ada0p1 ufs 1.8T 168G 1.5T 10% /data
200 linsysfs linsysfs 4.0K 4.0K 0B 100% /compat/linux/sys
201 /dev/da0 msdosfs 7.6G 424M 7.2G 5% /mnt/usb
204 Show previously collected data including inode statistics except for devfs or
205 linsysfs file systems.
208 prefix affects all the file systems in the list and the
210 option can be specified only once:
211 .Bd -literal -offset indent
212 $ df -i -n -t nodevfs,linsysfs
213 Filesystem 1K-blocks Used Avail Capacity iused ifree %iused
215 /dev/ada1p2 223235736 159618992 45757888 78% 1657590 27234568 6% /
216 /dev/ada0p1 1892163184 176319420 1564470712 10% 1319710 243300576 1%
218 /dev/da0 7989888 433664 7556224 5% 0 0 100%
222 Show human readable information for the file system containing the file
225 .Bd -literal -offset indent
227 Filesystem Size Used Avail Capacity Mounted on
228 /dev/ada1p2 213G 152G 44G 78% /
231 Same as above but specifying some file system:
232 .Bd -literal -offset indent
234 Filesystem Size Used Avail Capacity Mounted on
235 /dev/ada1p2 213G 152G 44G 78% /
247 .Xr xo_parse_args 3 ,
254 With the exception of most options,
259 which defines only the
272 flag is ignored if a file or file system is specified.
274 point is not accessible by the user, it is possible that the file system
275 information could be stale.
281 options are identical.
282 The former comes from the BSD tradition, and the latter is required