


      MOUNT(1)                    (UNIX 5.0)                   MOUNT(1)



      NAME
           mount, umount - mount and dismount file system

      SYNTAX
           /etc/mount [ special directory [ -r ] ]

           /etc/umount special

      DESCRIPTION
           Mount announces to the system that a removable file system
           is present on the device special.  The directory must exist
           already; it becomes the name of the root of the newly
           mounted file system.

           These commands maintain a table of mounted devices.  If
           invoked with no arguments, mount prints the table.

           The optional last argument indicates that the file is to be
           mounted read-only.  Physically write-protected file systems
           must be mounted in this way or errors will occur when access
           times are updated, whether or not any explicit write is
           attempted.

           Umount announces to the system that the removable file
           system previously mounted on device special is to be
           removed. UMOUNT is NOT CURRENTLY AVAILABLE.

           To mount a file system automatically at system boot time,
           insert a line in /etc/inittab of the following form:

              MNT0::respawn:/etc/mount disc-name  directory-name

      FILES
           /etc/mnttab    mount table

      SEE ALSO
           setmnt(1), mount(2), mnttab(4).

      DIAGNOSTICS
           Mount issues a warning if the file system to be mounted is
           currently mounted under another name.

           Umount complains if the special file is not mounted or if it
           is busy.  The file system is busy if it contains an open
           file or some user's working directory.

      BUGS
           Curently, a tape cannot be mounted, and physical write-
           protect cannot be set.  Some degree of validation is done on
           the file system, however it is generally unwise to mount
           garbage file systems.




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