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 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.
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, src 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.