8.6 Duplicating a Magnetic Tape

8.7 Using the tctl Command to Take a Tape Device Off-Line

The tctl command delivers subcommands to a streaming tape device. If you do not specify the Device variable with the -f flag, the TAPE environment variable is used. If an online tape drive requires service and appears unresponsive, use the following command:

tctl -f /dev/rmt0 reset

The reset command sends a bus device reset (BDR) to the tape device. The BDR will only be sent if the device cannot be opened and is not busy. You will not receive any form of notification. Once complete, the system will return the cursor to a prompt.

8.8 rmt Special File Notes