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 48The 49.Nm 50utility is designed to copy magnetic tapes. 51The only assumption made 52about the tape is that there are two tape marks at the end. 53The 54.Nm 55utility with only a source tape 56.Pf ( Ar /dev/sa0 57by default) specified will print 58information about the sizes of records and tape files. 59If a destination 60is specified a copy will be made of the source tape. 61The blocking on the 62destination tape will be identical to that used on the source tape. 63Copying 64a tape will yield the same output as if just printing the sizes. 65.Pp 66Options: 67.Bl -tag -width s_maxblk 68.It Fl c 69Copy 70.Ar src 71to 72.Ar dest 73and then verify that the two tapes are identical. 74.It Fl s Ar maxblk 75Specify a maximum block size, 76.Ar maxblk . 77.It Fl v 78Given the two tapes, 79.Ar src 80and 81.Ar dest 82verify that they are identical. 83.It Fl x 84Output all informational messages to the standard error. 85This option is useful when 86.Ar dest 87is 88.Pa /dev/stdout . 89.El 90.Sh SEE ALSO 91.Xr mtio 4 92.Sh HISTORY 93The 94.Nm 95command appeared in 96.Bx 4.3 . 97.Sh BUGS 98.Bl -item 99.It 100Writing an image of a tape to a file does not preserve much more than 101the raw data. 102Block size(s) and tape EOF marks are lost which would 103otherwise be preserved in a tape-to-tape copy. 104.It 105EOD is determined by two sequential EOF marks with no data between. 106There are old systems which typically wrote three EOF's between tape 107files. 108The 109.Nm 110utility will erroneously stop copying early in this case. 111.It 112When using the copy/verify option \-c 113.Nm 114does not rewind the tapes prior to start. 115A rewind is performed 116after writing prior to the verification stage. 117If one does not start 118at BOT then the comparison may not be of the intended data. 119.El 120