.\"	$OpenBSD: tcopy.1,v 1.6 1999/10/17 20:24:35 aaron Exp $
.\"	$NetBSD: tcopy.1,v 1.4 1997/04/15 07:23:07 lukem Exp $
.\"
.\" Copyright (c) 1985, 1990, 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
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.\"	This product includes software developed by the University of
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.\"     @(#)tcopy.1	8.2 (Berkeley) 4/17/94
.\"
.Dd April 17, 1994
.Dt TCOPY 1
.Os
.Sh NAME
.Nm tcopy
.Nd copy and/or verify mag tapes
.Sh SYNOPSIS
.Nm tcopy
.Op Fl cvx
.Op Fl s Ar maxblk
.Oo Ar src Op Ar dest
.Oc
.Sh DESCRIPTION
.Nm tcopy
is designed to copy magnetic tapes.  The only assumption made
about the tape is that there are two tape marks at the end.
.Nm tcopy
with only a source tape
.Pf ( Ar /dev/rst0
by default) specified will print
information about the sizes of records and tape files.  If a destination
is specified a copy will be made of the source tape.  The blocking on the
destination tape will be identical to that used on the source tape.  Copying
a tape will yield the same output as if just printing the sizes.
.Pp
The options are as follows:
.Bl -tag -width s_maxblk
.It Fl c
Copy
.Ar src
to
.Ar dest
and then verify that the two tapes are identical.
.It Fl s Ar maxblk
Specify a maximum block size,
.Ar maxblk .
.It Fl v
Given the two tapes,
.Ar src
and
.Ar dest ,
verify that they are identical.
.It Fl x
Output all informational messages to the standard error.
This option is useful when
.Ar dest
is
.Pa /dev/stdout .
.El
.Sh SEE ALSO
.Xr mtio 4
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.3 .