TCOPY(1) BSD General Commands Manual TCOPY(1)NAME
tcopy -- copy and/or verify mag tapes
tcopy [-cvx] [-s maxblk] [src [dest]]
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.
-c Copy src to dest and then verify that the two tapes are identical.
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.
SEE ALSO mtio(4)HISTORY
The tcopy command appeared in 4.3BSD.
BSD April 17, 1994 BSD
Check Out this Related Man Page
mt(1) User Commands mt(1)NAME
mt - magnetic tape control
mt [-f tapename] command... [count]
The mt utility sends commands to a magnetic tape drive. If -f tapename is not specified, the environment variable TAPE is used. If TAPE
does not exist, mt uses the device /dev/rmt/0n.
The following option is supported:
-f tapename Specifies the raw tape device.
The following operands are supported:
count The number of times that the requested operation is to be performed. By default, mt performs command once. Multiple opera-
tions of command may be performed by specifying count.
command Available commands that can be sent to a magnetic tape drive. Only as many characters as are required to uniquely identify
a command need be specified.
eof Writes count EOF marks at the current position on the tape.
fsf Forward spaces over count EOF marks. The tape is positioned on the first block of the file.
fsr Forward spaces count records.
bsf Back spaces over count EOF marks. The tape is positioned on the beginning-of-tape side of the EOF mark.
bsr Back spaces count records.
nbsf Back spaces count files. The tape is positioned on the first block of the file. This is equivalent to
count+1 bsf's followed by one fsf.
asf Specifies absolute space to count file number. This is equivalent to a rewind followed by a fsf count.
If count is specified with any of the following commands, the count is ignored and the command is performed only once.
eom Spaces to the end of recorded media on the tape. This is useful for appending files onto previously written
rewind Rewinds the tape.
offline Rewinds the tape and, if appropriate, takes the drive unit off-line by unloading the tape.
status Prints status information about the tape unit.
retension Rewinds the cartridge tape completely, then winds it forward to the end of the reel and back to beginning-
of-tape to smooth out tape tension.
reserve Allows the tape drive to remain reserved after closing the device. The drive must then be explicitly
release Re-establishes the default behavior of releasing at close.
forcereserve Breaks the reservation of the tape drive held by another host and then reserves the tape drive. This com-
mand can be executed only with super-user privileges.
erase Erases the entire tape. Caution: Some tape drives have option settings where only portions of the tape may
be erased. Be sure to select the correct setting to erase the whole tape. Erasing a tape may take a long
time depending on the device and/or tape. Refer to the device specific manual for time details.
config Reads the drives current configuration from the driver and displays it in st.conf format. See st(7D) for
definition of fields and there meanings.
0 All operations were successful.
1 Command was unrecognized or mt was unable to open the specified tape drive.
2 An operation failed.
/dev/rmt/* magnetic tape interface
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Availability |SUNWcsu |
SEE ALSO tar(1), tcopy(1), ar.h(3HEAD), environ(4), attributes(5), mtio( 7I), st(7D)BUGS
Not all devices support all options. Some options are hardware-dependent. Refer to the corresponding device manual page.
mt is architecture sensitive. Heterogeneous operation (that is, SPARC to x86 or the reverse) is not supported.
SunOS 5.10 1 Sep 2004 mt(1)