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. The only assumption made 51about the tape is that there are two tape marks at the end. 52The 53.Nm 54utility with only a source tape 55.Pf ( Ar /dev/rsa0 56by default) specified will print 57information about the sizes of records and tape files. If a destination 58is specified a copy will be made of the source tape. The blocking on the 59destination tape will be identical to that used on the source tape. Copying 60a tape will yield the same output as if just printing the sizes. 61.Pp 62Options: 63.Bl -tag -width s_maxblk 64.It Fl c 65Copy 66.Ar src 67to 68.Ar dest 69and then verify that the two tapes are identical. 70.It Fl s Ar maxblk 71Specify a maximum block size, 72.Ar maxblk . 73.It Fl v 74Given the two tapes, 75.Ar src 76and 77.Ar dest 78verify that they are identical. 79.It Fl x 80Output all informational messages to the standard error. 81This option is useful when 82.Ar dest 83is 84.Pa /dev/stdout . 85.El 86.Sh SEE ALSO 87.Xr mtio 4 88.Sh HISTORY 89The 90.Nm 91command appeared in 92.Bx 4.3 . 93.Sh BUGS 94.Bl -item 95.It 96Writting an image of a tape to a file does not preserve much more than 97the raw data. 98Block size(s) and tape EOF marks are lost which would 99otherwise be preserved in a tape-to-tape copy. 100.It 101EOD is determined by two sequential EOF marks with no data between. 102There are old systems which typically wrote three EOF's between tape 103files. 104.Xr tcopy 1 105will erroneously stop copying early in this case. 106.It 107When using the copy/verify option \-c 108.Xr tcopy 1 109does not rewind the tapes prior to start. 110A rewind is performed 111after writing prior to the verification stage. 112If one doesn't start 113at BOT then the comparison may not be of the intended data. 114.El 115