wt(7)                INTERACTIVE UNIX System                wt(7)



          NAME
               wt - cartridge tape device

          DESCRIPTION
               The wt device driver provides the interface to an AT car-
               tridge (streaming) tape device.  When opened for reading or
               writing, the tape is presumed to be positioned as desired
               for the operation.  On close, the tape is rewound or left at
               the current position depending on the device selection.  To
               rewind the tape, use the rewind-on-close device.

             Ioctl Calls
               Two ioctl(2) system calls are available from
               <sys/wtioctl.h>:

               ERASE    This call erases data on the tape cartridge.

               RETENS   This call is used to ``retension'' tape in the car-
                        tridge.

          FILES
               /dev/tape       /* rewind on close */
               /dev/ntape      /* no rewind */

          NOTES
               At present the driver supports Wangtek and Bell Technologies
               compatible tape controller cards.

          SEE ALSO
               backup(1), cpio(1), dd(1), restore(1), tar(1).
               dump(1) in the INTERACTIVE SDS Guide and Programmer's Refer-
               ence Manual.
               IBM Personal Computer AT Technical Reference.

          ADDED VALUE
               This entry, supplied by INTERACTIVE Systems Corporation, is
               an extension of UNIX System V.


















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