df(1M)                        UNIX System V(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 mounted systems the 10% reserved space mentioned above is
      included in the number of kilobytes used.  For unmounted systems the 10%
      reservation is not included in the number of kilobytes used.

      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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