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28 .\" @(#)df.1 8.3 (Berkeley) 5/8/95
29 .\" $FreeBSD: src/bin/df/df.1,v 1.18.2.9 2003/05/07 23:56:14 trhodes Exp $
36 .Nd display free disk space
45 .Op Ar file | filesystem ...
50 displays statistics about the amount of free disk space on the specified
52 or on the file system of which
55 Values are displayed in 512-byte per block counts.
56 If neither a file or a file system operand is specified,
57 statistics for all mounted file systems are displayed
62 The following options are available:
65 Show all mount points, including those that were mounted with the
69 Use 512-byte blocks rather than the default. Note that
72 specification from the environment.
74 Use 1073741824-byte (1-Gbyte) blocks rather than the default. Note that
77 specification from the environment.
79 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
80 Gigabyte, Terabyte and Petabyte in order to reduce the number of
81 digits to four or fewer using base 10 for sizes.
83 "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte,
84 Gigabyte, Terabyte and Petabyte in order to reduce the number of
85 digits to four or fewer using base 2 for sizes.
87 Include statistics on the number of free and used inodes.
88 In conjunction with the
92 options, the number of inodes is scaled by powers of 1000.
94 Use 1024-byte (1-Kbyte) blocks rather than the default. Note that
97 specification from the environment.
99 Only display information about locally-mounted file systems.
101 Use 1048576-byte (1-Mbyte) blocks rather than the default. Note that
104 specification from the environment.
106 Print out the previously obtained statistics from the file systems.
107 This option should be used if it is possible that one or more
108 file systems are in a state such that they will not be able to provide
109 statistics without a long delay.
110 When this option is specified,
112 will not request new statistics from the file systems, but will respond
113 with the possibly stale statistics that were previously obtained.
115 Use POSIX compliant output of 512-byte blocks rather than the default.
116 Note that this overrides the
118 specification from the environment.
120 Only print out statistics for file systems of the specified types.
121 More than one type may be specified in a comma separated list.
122 The list of file system types can be prefixed with
124 to specify the file system types for which action should
130 .Bd -literal -offset indent
134 lists all file systems except those of type
140 command can be used to find out the types of file systems
141 that are available on the system.
143 Include file system type.
146 .Bl -tag -width BLOCKSIZE
148 If the environment variable
150 is set, the block counts will be displayed in units of that size block.
172 flags are ignored if a file or file system is specified.