DF(1)                   COMMAND REFERENCE                   DF(1)



NAME
     df - disk free

SYNOPSIS
     df [ -i ]  [ -t type | [ filesystem ... ]  [ filename ... ]]

DESCRIPTION
     The df command prints out the amount of free disk space
     available on the specified filesystem, e.g. /dev/rp0a, or on
     the file system in which the specified file, e.g. $HOME, is
     contained.  If no file system is specified, the free space
     on all normally mounted file systems is printed; the
     reported numbers are in kilobytes.

     There are two output formats.  The following columns are
     listed normally:

          Filesystem  kbytes  used  avail  capacity  Mounted on

     The Filesystem column lists the name of the device for the
     file system, such as /dev/hp0a; The kbytes column lists the
     number of kilobytes on the device; the used column lists the
     number of kilobytes allocated to files; the avail column
     lists the number of kilobytes still available for files; the
     capacity column lists the percentage of the file system
     space that is allocated; the Mounted on column lists the
     name of the root of the filesystem, such as /.

     When the -i option is given, the following columns are also
     given:

          iused   ifree  %iused

     The iused column lists the number of inodes allocated; the
     ifree column lists the number of inodes still available; the
     %iused column lists the percentage of the total number of
     inodes that are allocated.

OPTIONS
     -i                  Report the number of inodes used and the
                         number of inodes that are free.

                         Under some circumstances it may be
                         impossible to obtain reliable statistics
                         about inodes on a remote file system
                         when using this option. If this is the
                         case, the iused, ifree and %iused fields
                         will be printed as "---" for that file
                         system.

     -t type  |  filesystem   filename
                         Specify type 4.2 or nfs; if you specify



Printed 4/6/89                                                  1

DF(1)                   COMMAND REFERENCE                   DF(1)



                         a filesystem or filename df reports
                         information about those objects too.

EXAMPLES
     The following example prints a report of the free and used
     disk space and inodes in the file system /tmp:

          df -i /tmp

FILES
     /etc/fstab
               File containing the list of normally mounted file
               systems

     /etc/mtab File containing the mounted file system table

RETURN VALUE
     [NO_ERRS]      Command completed without error.

     [USAGE]        Incorrect command line syntax. Execution
                    terminated.

     [NP_WARN]      An error warranting a warning message
                    occurred. Execution continues.

     [P_WARN]       A system error occurred. Execution continues.
                    See intro(2) for more information on system
                    errors.

     [P_ERR]        A system error occurred. Execution
                    terminated.  See intro(2) for more
                    information on system errors.

CAVEATS
     The capacity of a file system can be reported as more than
     100% because swap space may be being used.  The swap space
     is not normally included in the statistics.

     Under some circumstances it may be impossible to obtain
     reliable statistics about inodes on a remote file system
     when using the -i option. If this is the case, the iused,
     ifree and %iused fields will be printed as "---" for that
     file system.

SEE ALSO
     fstab(5), mtab(5), icheck(8), and quot(8).









Printed 4/6/89                                                  2

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