The ” tcopy ” tility used to copies the magnetic tape mounted on the tape drive specified by the source argument. Simply, the ” tcopy ” used for copies one tape to another tape.

Rewind the tape first
# mt -f /dev/rmt/0 rewind
# mt -f /dev/rmt/1 rewind

And then ” tcopy
# tcopy /dev/rmt/0 /dev/rmt/1

Note
rmt = raw magnetic tape device

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