df(1M)                             (UFS)                             df(1M)


   NAME
         df (ufs) - report free disk space on ufs file systems

   SYNOPSIS
         df [ -F ufs ] [ generic_options ] [ -o i ] [directory | special]

   DESCRIPTION
         generic_options are options supported by the generic df command.

         df displays the amount of disk space occupied by ufs file systems,
         the amount of used and available space, and how much of the file
         system's total capacity has been used.

         Note that the amount of space reported as used and available is less
         than the amount of space in the file system; 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(1M).  When all the space on the file system except for this
         reserve is in use, only the super-user can allocate new files and
         data blocks to existing files.  When the file system is overallocated
         in this way, df may report that the file system is more than 100%
         utilized.

         The options are:

         -F ufs
               Specifies the ufs-FSType.

         -o    Specify ufs file system specific options.  The available option
               is:

               i     Report the number of used and free inodes.  May not be
                     used with generic_options.

   NOTES
         df calculates its results differently for mounted and unmounted file
         systems.  For unmounted systems the numbers reflect the 10%
         reservation mentioned above.  For this reason, the available space
         reported by the generic command may differ from the available space
         reported by this module.

         The -b and -e options override the -t option.

   FILES
         /etc/mnttab         list of file systems currently mounted

   SEE ALSO
         generic df(1M), du(1M), quot(1M), tunefs(1M), mnttab(4)




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