du(1) [opendarwin man page]

DU(1)							    BSD General Commands Manual 						     DU(1)

NAME

     du -- display disk usage statistics

SYNOPSIS

     du [-H | -L | -P] [-I mask] [-a | -s | -d depth] [-c] [-h | -k] [-x] [file ...]

DESCRIPTION

     The du utility displays the file system block usage for each file argument and for each directory in the file hierarchy rooted in each direc-
     tory argument.  If no file is specified, the block usage of the hierarchy rooted in the current directory is displayed.  If the -k flag is
     specified, the number of 1024-byte blocks used by the file is displayed, otherwise getbsize(3) is used to determine the preferred block size.
     Partial numbers of blocks are rounded up.

     The options are as follows:

     -H      Symbolic links on the command line are followed, symbolic links in file hierarchies are not followed.

     -L      Symbolic links on the command line and in file hierarchies are followed.

     -I mask
	     Ignore files and directories matching the specified mask.

     -P      No symbolic links are followed.  This is the default.

     -a      Display an entry for each file in a file hierarchy.

     -h      "Human-readable" output.  Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte

     -r      Generate messages about directories that cannot be read, files that cannot be opened, and so on.  This is the default case.  This
	     option exists solely for conformance with X/Open Portability Guide Issue 4 (``XPG4'').

     -s      Display an entry for each specified file.	(Equivalent to -d 0)

     -d depth
	     Display an entry for all files and directories depth directories deep.

     -c      Display a grand total.

     -k      Display block counts in 1024-byte (1-Kbyte) blocks.

     -x      File system mount points are not traversed.

     The du utility counts the storage used by symbolic links and not the files they reference unless the -H or -L option is specified.  If either
     the -H or -L options are specified, storage used by any symbolic links which are followed is not counted or displayed.

     Files having multiple hard links are counted (and displayed) a single time per du execution.

ENVIRONMENT

     BLOCKSIZE	If the environment variable BLOCKSIZE is set, and the -k option is not specified, the block counts will be displayed in units of
		that size block.  If BLOCKSIZE is not set, and the -k option is not specified, the block counts will be displayed in 512-byte
		blocks.

SEE ALSO

     df(1), fts(3), symlink(7), quot(8)

HISTORY

     A du command appeared in Version 1 AT&T UNIX.

BSD
								   April 1, 1994							       BSD

DF(1)							    BSD 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 filesystem or on the filesystem of which file is a
     part.  Values are displayed in 512-byte per block counts.	If neither a file or a filesystem operand is specified, statistics for all mounted
     filesystems 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 environ-
	     ment.

     -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 environment.

     -l      Only display information about locally-mounted filesystems.

     -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 filesystems.  This option should be used if it is possible that one or more
	     filesystems are in a state such that they will not be able to provide statistics without a long delay.  When this option is speci-
	     fied, df will not request new statistics from the filesystems, but will respond with the possibly stale statistics that were previ-
	     ously 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 filesystems of the specified types.	More than one type may be specified in a comma separated list.
	     The list of filesystem types can be prefixed with ``no'' to specify the filesystem types for which action should not be taken.  For
	     example, the df command:

		   df -t nonfs,mfs

	     lists all filesystems except those of type NFS and MFS.  The lsvfs(1) command can be used to find out the types of filesystems 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 filesystem 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.

BSD
								    May 8, 1995 							       BSD