mt(1)                    USER COMMANDS                      mt(1)



NAME
     mt - magnetic tape control

SYNOPSIS
     /usr/ucb/mt [ -f tapename ] command [ count ]

DESCRIPTION
     mt sends commands to a magnetic tape drive.  If tapename  is
     not  specified,  the  environment variable TAPE is used.  If
     TAPE  does  not  exist,  mt  uses  the  device   /dev/rmt/4.
     tapename  must  refer  to a raw (not block) tape device.  By
     default, mt performs the requested operation once;  multiple
     operations may be performed by specifying count.  The avail-
     able commands are listed below.  mt returns a 0 exit  status
     on  success  or  1  on  failure.  the following commands are
     available to mt:

     fsf  Forward space count files.

     asf  Absolute  space  to  count  file   number.    This   is
          equivalent to a rewind followed by a fsf count. For the
          following commands, count is ignored:

     rewind
          Rewind the tape.

     retension
          Wind the tape to the end of the reel  and  then  rewind
          it, smoothing out the tape tension.

FILES
     /dev/rmt*           raw magnetic tape interface
     /dev/rar*           raw Archive cartridge tape interface
     /dev/rst*           raw SCSI tape interface
     /dev/rmt*           raw Xylogicsr tape interface

SEE ALSO
     dd(1M),   ar(4),   environ(5),   xt(7)   in    the    System
     Administrator's Reference Manual.

NOTES
     Not all  devices  support  all  options.   For  example,  ar
     currently  does  not  support  the fsr, bsf, or bsr options.
     The half-inch tape driver, /dev/rmt*, does not  support  the
     retension option.










             Last change: BSD Compatibility Package             1