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OpenDarwin 7.2.1 - man page for tcopy (opendarwin section 1)

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TCOPY(1)			   BSD General Commands Manual				 TCOPY(1)

NAME
     tcopy -- copy and/or verify mag tapes

SYNOPSIS
     tcopy [-cvx] [-s maxblk] [src [dest]]

DESCRIPTION
     tcopy is designed to copy magnetic tapes.	The only assumption made about the tape is that
     there are two tape marks at the end.  tcopy with only a source tape (/dev/rst0 by default)
     specified will print information about the sizes of records and tape files.  If a destina-
     tion 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.

     Options:

     -c        Copy src to dest and then verify that the two tapes are identical.

     -s maxblk
	       Specify a maximum block size, maxblk.

     -v        Given the two tapes, and dest verify that they are identical.

     -x        Output all informational messages to the standard error.  This option is useful
	       when dest is /dev/stdout.

SEE ALSO
     mtio(4)

HISTORY
     The tcopy command appeared in 4.3BSD.

4.3 Berkeley Distribution		  April 17, 1994		4.3 Berkeley Distribution
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