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tcopy(1) [opendarwin man page]

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

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 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, 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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MT(1)							      General Commands Manual							     MT(1)

mt - magnetic tape manipulating program SYNOPSIS
mt [ -f tapename ] command [ count ] DESCRIPTION
Mt is used to give commands to a magnetic tape drive. If a tape name is not specified, the environment variable TAPE is used; if TAPE does not exist, mt uses the device /dev/rmt12. Note that tapename must reference a raw (not block) tape device. By default mt performs the requested operation once. Operations may be performed multiple times by specifying count. The available commands are listed below. Only as many characters as are required to uniquely identify a command need be specified. eof, weof Write count end-of-file marks at the current position on the tape. fsf Forward space count files. fsr Forward space count records. bsf Back space count files. bsr Back space count records. rewind Rewind the tape (Count is ignored). offline, rewoffl Rewind the tape and place the tape unit off-line (Count is ignored). status Print status information about the tape unit. cacheon Enable the readahead/writebehind cache on the tape unit. cacheoff Turn off the readahead/writebehind cache on the tape unit. Mt returns a 0 exit status when the operation(s) were successful, 1 if the command was unrecognized, and 2 if an operation failed. The cacheon and cacheoff commands currently only apply to the TMSCP driver and then only for certain drives such as the TU81+. No error is produced by the TMSCP driver if the cache commands are used. Other drivers will return an error code since they do not recognize the MTCACHE and MTNOCACHE functions codes. See mtio(4). FILES
/dev/rmt* Raw magnetic tape interface SEE ALSO
mtio(4), tmscp(4), dd(1), ioctl(2), environ(7) 4th Berkeley Distribution December 22, 1995 MT(1)
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