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DF(1)			FreeBSD	General	Commands Manual			 DF(1)

NAME
     df	-- display free	disk space

SYNOPSIS
     df	[-b | -h | -H |	-k | -m	| -P] [-ailn] [-t type]
	[file |	filesystem ...]

DESCRIPTION
     The df utility displays statistics	about the amount of free disk space on
     the specified file	system or on the file system of	which file is a	part.
     Values are	displayed in 512-byte per block	counts.	 If neither a file or
     a file system operand is specified, statistics for	all mounted file sys-
     tems are displayed	(subject to the	-t option below).

     The following options are available:

     -a	     Show all mount points, including those that were mounted with the
	     MNT_IGNORE	flag.

     -b	     Use 512-byte blocks rather	than the default.  Note	that this
	     overrides the BLOCKSIZE specification from	the environment.

     -g	     Use 1073741824-byte (1-Gbyte) blocks rather than the default.
	     Note that this overrides the BLOCKSIZE specification from the
	     environment.

     -H	     "Human-readable" output.  Use unit	suffixes: Byte,	Kilobyte,
	     Megabyte, Gigabyte, Terabyte and Petabyte in order	to reduce the
	     number of digits to three or less using base 10 for sizes.

     -h	     "Human-readable" output.  Use unit	suffixes: Byte,	Kilobyte,
	     Megabyte, Gigabyte, Terabyte and Petabyte in order	to reduce the
	     number of digits to three or less using base 2 for	sizes.

     -i	     Include statistics	on the number of free inodes.

     -k	     Use 1024-byte (1-Kbyte) blocks rather than	the default.  Note
	     that this overrides the BLOCKSIZE specification from the environ-
	     ment.

     -l	     Only display information about locally-mounted file systems.

     -m	     Use 1048576-byte (1-Mbyte)	blocks rather than the default.	 Note
	     that this overrides the BLOCKSIZE specification from the environ-
	     ment.

     -n	     Print out the previously obtained statistics from the file	sys-
	     tems.  This option	should be used if it is	possible that one or
	     more file systems are in a	state such that	they will not be able
	     to	provide	statistics without a long delay.  When this option is
	     specified,	df will	not request new	statistics from	the file sys-
	     tems, but will respond with the possibly stale statistics that
	     were previously obtained.

     -P	     Use POSIX compliant output	of 512-byte blocks rather than the
	     default.  Note that this overrides	the BLOCKSIZE specification
	     from the environment.

     -t	     Only print	out statistics for file	systems	of the specified
	     types.  More than one type	may be specified in a comma separated
	     list.  The	list of	file system types can be prefixed with ``no''
	     to	specify	the file system	types for which	action should not be
	     taken.  For example, the df command:

		   df -t nonfs,nullfs

	     lists all file systems except those of type NFS and NULLFS.  The
	     lsvfs(1) command can be used to find out the types	of file	sys-
	     tems that are available on	the system.

ENVIRONMENT
     BLOCKSIZE	If the environment variable BLOCKSIZE is set, the block	counts
		will be	displayed in units of that size	block.

BUGS
     The -n and	-t flags are ignored if	a file or file system is specified.

SEE ALSO
     lsvfs(1), quota(1), fstatfs(2), getfsstat(2), statfs(2), getmntinfo(3),
     fstab(5), mount(8), quot(8)

HISTORY
     A df command appeared in Version 1	AT&T UNIX.

FreeBSD	10.1			  May 8, 1995			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | ENVIRONMENT | BUGS | SEE ALSO | HISTORY

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