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32 .\" @(#)df.1 8.3 (Berkeley) 5/8/95
40 .Nd display free disk space
43 .Op Fl b | h | H | k | m | P
46 .Op Ar file | Ar filesystem ...
49 displays statistics about the amount of free disk space on the specified
51 or on the filesystem of which
54 Values are displayed in 512-byte per block counts.
55 If neither a file or a filesystem operand is specified,
56 statistics for all mounted filesystems are displayed
61 The following options are available:
64 Show all mount points, including those that were mounted with the MNT_IGNORE
67 Use 512-byte blocks rather than the default. Note that
70 specification from the environment.
72 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
73 Gigabyte, Terabyte and Petabyte in order to reduce the number of
74 digits to three or less using base 10 for sizes.
76 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
77 Gigabyte, Terabyte and Petabyte in order to reduce the number of
78 digits to three or less using base 2 for sizes.
80 Include statistics on the number of free inodes.
82 Use 1024-byte (1-Kbyte) blocks rather than the default. Note that
85 specification from the environment.
87 Use 1048576-byte (1-Mbyte) blocks rather than the default. Note that
90 specification from the environment.
92 Print out the previously obtained statistics from the filesystems.
93 This option should be used if it is possible that one or more
94 filesystems are in a state such that they will not be able to provide
95 statistics without a long delay.
96 When this option is specified,
98 will not request new statistics from the filesystems, but will respond
99 with the possibly stale statistics that were previously obtained.
101 Use POSIX compliant output of 512-byte blocks rather than the default.
102 Note that this overrides the
104 specification from the environment.
106 Only print out statistics for filesystems of the specified types.
107 More than one type may be specified in a comma separated list.
108 The list of filesystem types can be prefixed with
110 to specify the filesystem types for which action should
116 .Bd -literal -offset indent
120 lists all filesystems except those of type
126 command can be used to find out the types of filesystems
127 that are available on the system.
130 .Bl -tag -width BLOCKSIZE
132 If the environment variable
134 is set, the block counts will be displayed in units of that size block.
141 flags are ignored if a file or filesystem is specified.