df_ufs(1M)

NAME

     df_ufs - report free disk space on ufs file systems

SYNOPSIS

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

DESCRIPTION

     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.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 superuser
     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.If
     neither  directory  nor  special  is specified,  df displays
     information for all mounted ufs file systems.

OPTIONS

     The following options are supported:

          generic_options
                Options supported by  the  generic   df  command.
                See  df(1M) for a description of these options.

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

                i     Report the number of used and free  inodes.
                      This   option   may   not   be   used  with
                      generic_options.

FILES

     /etc/mnttab
           list of file systems currently mounted

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu, SUNWxcu4           |
    |_____________________________|_____________________________|

SEE ALSO

     df(1M), tunefs(1M), mnttab(4), attributes(5), ufs(7FS)

NOTES

     df  calculates  its  results  differently  for  mounted  and
     unmounted  file  systems. For unmounted systems, the numbers
     reflect the 10% reservation mentioned above;  this  reserva-
     tion is not reflected in df output for mounted file systems.
     For this reason, the available space reported by the generic
     command may differ from the available space reported by this
     module.