132 lines
3.7 KiB
Groff
132 lines
3.7 KiB
Groff
.\" Copyright (c) 1981, 1990 The Regents of the University of California.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" from: @(#)mt.1 6.7 (Berkeley) 7/28/91
|
|
.\" $Id: mt.1,v 1.2 1993/08/01 07:48:21 mycroft Exp $
|
|
.\"
|
|
.Dd July 28, 1991
|
|
.Dt MT 1
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm mt
|
|
.Nd magnetic tape manipulating program
|
|
.Sh SYNOPSIS
|
|
.Nm mt
|
|
.Op Fl f Ar tapename
|
|
.Ar command
|
|
.Op Ar count
|
|
.Sh DESCRIPTION
|
|
.Nm Mt
|
|
is used to give commands to a magnetic tape drive.
|
|
By default
|
|
.Nm mt
|
|
performs the requested operation once. Operations
|
|
may be performed multiple times by specifying
|
|
.Ar count .
|
|
Note
|
|
that
|
|
.Ar tapename
|
|
must reference a raw (not block) tape device.
|
|
.Pp
|
|
The available commands are listed below. Only as many
|
|
characters as are required to uniquely identify a command
|
|
need be specified.
|
|
.Bl -tag -width "eof, weof"
|
|
.It Cm eof , weof
|
|
Write
|
|
.Ar count
|
|
end-of-file marks at the current position on the tape.
|
|
.It Cm fsf
|
|
Forward space
|
|
.Ar count
|
|
files.
|
|
.It Cm fsr
|
|
Forward space
|
|
.Ar count
|
|
records.
|
|
.It Cm bsf
|
|
Back space
|
|
.Ar count
|
|
files.
|
|
.It Cm bsr
|
|
Back space
|
|
.Ar count
|
|
records.
|
|
.It Cm rewind
|
|
Rewind the tape
|
|
(Count is ignored).
|
|
.It Cm offline , rewoffl
|
|
Rewind the tape and place the tape unit off-line
|
|
(Count is ignored).
|
|
.It Cm status
|
|
Print status information about the tape unit.
|
|
.El
|
|
.Pp
|
|
If a tape name is not specified, and the environment variable
|
|
.Ev TAPE
|
|
does not exist;
|
|
.Nm mt
|
|
uses the device
|
|
.Pa /dev/rmt12 .
|
|
.Pp
|
|
.Nm Mt
|
|
returns a 0 exit status when the operation(s) were successful,
|
|
1 if the command was unrecognized, and 2 if an operation failed.
|
|
.Sh ENVIRONMENT
|
|
If the following environment variable exists, it is utilized by
|
|
.Nm mt .
|
|
.Bl -tag -width Fl
|
|
.It Ev TAPE
|
|
.Nm Mt
|
|
checks the
|
|
.Ev TAPE
|
|
environment variable if the
|
|
argument
|
|
.Ar tapename
|
|
is not given.
|
|
.Sh FILES
|
|
.Bl -tag -width /dev/rmt* -compact
|
|
.It Pa /dev/rmt*
|
|
Raw magnetic tape interface
|
|
.El
|
|
.Sh SEE ALSO
|
|
.\".Xr mtio 4 ,
|
|
.Xr dd 1 ,
|
|
.Xr ioctl 2 ,
|
|
.Xr environ 7
|
|
.Sh HISTORY
|
|
The
|
|
.Nm mt
|
|
command appeared in
|
|
.Bx 4.3 .
|
|
.\" mt.1: mtio(4) missing
|