DF(1-BSD)           RISC/os Reference Manual            DF(1-BSD)



NAME
     df - disk free

SYNOPSIS
     df [ -f ] [ -b ] [ -u ] [ -i ] [ -t type | file...  ]

DESCRIPTION
     Normally, df is used to summarize disk usage in a table that
     gives the filesystem name, the total amount of space (in
     kilobytes), the amount of space used (in kilobytes), the
     amount of space (in kilobytes) still available, the percen-
     tage of the space used, and the name of the top level direc-
     tory of the filesystem (also called the mount point).  The
     table looks like the following:

     Filesystem       kbytes    used   avail capacity  Mounted on
     /dev/ip0a         14741   11025    2241    83%    /

     The percentage used (``capacity'') column may show a value
     greater than 100%.  This is because some portion of the
     filesystem, usually 10%, is reserved for the super-user.

     If the -i option is given, a different summary table is
     printed, giving the filesystem name, the number of inodes
     (files) used, the number of inodes free, the percentage of
     inodes used, and the mount point for the filesystem.  The
     table looks like the following:

     Filesystem          iused   ifree  %iused  Mounted on
     /dev/ip0a             603    6821     8%   /

     If no -t option or filenames are given, all mounted filesys-
     tems are summarized.

     The -t option must be given with a type argument to tell df
     to only summarize filesystems of that type.  Valid values
     for type are:

     4.3     summarize only locally mounted filesystems

     nfs     summarize only remotely mounted filesystems

     local   summarize all non-nfs mounted filesystems

     If multiple -t options are given, only the last one is used.

     Finally, a set of filesystems may be specified by either
     naming the device, such as ``/dev/rip0a'', or by files that
     reside on the filesystem.  For example, the root filesystem
     is normally mounted from /dev/rip0a, so the following com-
     mands are equivalent:




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DF(1-BSD)           RISC/os Reference Manual            DF(1-BSD)




          df /
          df /vmunix
          df /dev/rip0a

     The -b option reports the space in 512 byte units for compa-
     tibility with older file system implementations.

     The -f option forces a scan of the free list to occur which
     is a more accurate, and a somewhat more time consuming meas-
     urement.

     The -u option verifies that a remote NFS host is up before
     attempting to query it.

FILES
     /etc/mtab      list of mounted filesystems

SEE ALSO
     mount(1M) in the System Administrator's Reference Manual.
     fstab(4) in the Programmer's Reference Manual.

BUGS
     Due to the way NFS works, the inode information for remotely
     mounted filesystems is not available, and the values are
     printed as ``N/A''.





























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