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DF(1)									 DF(1)

NAME
       df - report free disk space on file systems

SYNOPSIS
       df  [ -i ] [ filesystem ... ] [ file ... ] [ -t type ] [ filesystem ...
       ] [ filename ... ]

DESCRIPTION
       df displays the amount of disk space occupied by currently mounted file
       systems,	 the  amount  of used and available space, and how much of the
       file system's total capacity has been used.  Used without arguments, df
       reports on all mounted file systems, producing something like:
	      tutorial% df
	      Filesystem  kbytes  used	avail  capacity	 Mounted on
	      /dev/ip0a	   7445	   4714 1986   70%	 /
	      /dev/ip0g	  42277	  35291 2758   93%	 /usr

       Note  that  used+avail  is  less	 than  the amount of space in the file
       system (kbytes); this is because the system reserves a fraction of  the
       space  in  the file system to allow its file system allocation routines
       to work well.  The amount reserved is typically about 10%; this may  be
       adjusted	 using tunefs.	When all the space on a file system except for
       this reserve is in use, only the super-user can allocate new files  and
       data  blocks to existing files.	When a file system is overallocated in
       this way, df may	 report	 that  the  file  system  is  more  than  100%
       utilized.

       If arguments to df are disk partitions (for example, /dev/ip0a) or UNIX
       path names, df produces a report on  the	 file  system  containing  the
       named  file.  Thus "df ."  shows the amount of space on the file system
       containing the current directory.

OPTIONS
       -i     Also report the number of inodes which are used and free.	  This
	      option  is only meaningful for local file systems, since the NFS
	      protocol does not support it.

       -t type
	      Report on filesystems of a given type (for example, nfs or 4.2).

FILES
       /etc/mtab   list of currently mounted filesystems

SEE ALSO
       du(1V), mtab(5), quot(8), tunefs(8)

4th Berkeley Distribution	April 29, 1985				 DF(1)

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