df(1-BSD)         MISC. REFERENCE MANUAL PAGES          df(1-BSD)



NAME
     df - report free disk space on file systems

SYNOPSIS
     /usr/ucb/df [ -i ] [ -a ] [ -t type ] [ directory|special ]

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.  If arguments to df are 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 con-
     taining the current directory.  The  following  options  are
     available:

     -i   Print only the number of  inodes  which  are  used  and
          free.

     -a   Print the amount of used and available space  in  kilo-
          bytes.

     -t  type
          Print the amount of used and available space of a given
          type (for example, nfs, s5, or ufs)

EXAMPLE
     A sample of output for df looks like:

          Filesystem  kbytes  used   avail  capacity  Mounted on
          /dev/root   23557   17943  3258   85%       /
          /dev/fdsk0  1343    193    1016   16%       /mnt
          /dev/sd00d  575612  264484 253566 51%       /usr
          cross:/usr  119375  87486  19951  81%       /net/cross/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.

FILES
     /etc/mnttab         list of file systems currently mounted
     /etc/vfstab         list of default parameters for each file
                         system





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df(1-BSD)         MISC. REFERENCE MANUAL PAGES          df(1-BSD)



SEE ALSO
     du(1M),  quot(1M),  tunefs(1M),  mnttab(4)  in  the   System
     Administrator's Reference Manual.




















































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