1.\" Copyright (c) 1985, 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)tcopy.1 8.2 (Berkeley) 4/17/94 33.\" $FreeBSD$ 34.\" 35.Dd April 17, 1994 36.Dt TCOPY 1 37.Os 38.Sh NAME 39.Nm tcopy 40.Nd copy and/or verify mag tapes 41.Sh SYNOPSIS 42.Nm 43.Op Fl cvx 44.Op Fl s Ar maxblk 45.Oo Ar src Op Ar dest 46.Oc 47.Sh DESCRIPTION 48.Nm Tcopy 49is designed to copy magnetic tapes. The only assumption made 50about the tape is that there are two tape marks at the end. 51.Nm Tcopy 52with only a source tape 53.Pf ( Ar /dev/rsa0 54by default) specified will print 55information about the sizes of records and tape files. If a destination 56is specified a copy will be made of the source tape. The blocking on the 57destination tape will be identical to that used on the source tape. Copying 58a tape will yield the same output as if just printing the sizes. 59.Pp 60Options: 61.Bl -tag -width s_maxblk 62.It Fl c 63Copy 64.Ar src 65to 66.Ar dest 67and then verify that the two tapes are identical. 68.It Fl s Ar maxblk 69Specify a maximum block size, 70.Ar maxblk . 71.It Fl v 72Given the two tapes, 73.Ar src 74and 75.Ar dest 76verify that they are identical. 77.It Fl x 78Output all informational messages to the standard error. 79This option is useful when 80.Ar dest 81is 82.Pa /dev/stdout . 83.El 84.Sh SEE ALSO 85.Xr mtio 4 86.Sh HISTORY 87The 88.Nm 89command appeared in 90.Bx 4.3 . 91.Sh BUGS 92.Bl -item 93.It 94Writting an image of a tape to a file does not preserve much more than 95the raw data. 96Block size(s) and tape EOF marks are lost which would 97otherwise be preserved in a tape-to-tape copy. 98.It 99EOD is determined by two sequential EOF marks with no data between. 100There are old systems which typically wrote three EOF's between tape 101files. 102.Xr tcopy 1 103will erroneously stop copying early in this case. 104.It 105When using the copy/verify option \-c 106.Xr tcopy 1 107does not rewind the tapes prior to start. 108A rewind is performed 109after writing prior to the verification stage. 110If one doesn't start 111at BOT then the comparison may not be of the intended data. 112.El 113