display: Displays the recognized devices attached to your system
status: Reports the status of the selected device (ntape0 is the default). Output looks like:
Vendor = OnStream, Model = ADR Series
Revision Level = 6.04
Medium Type: 0x0 (empty)
Density Code: 0x0 - default
Drive Not Ready, No tape inserted
fsf [x]: Moves the tape forward by x number of filemarks - default is 1. When the motion completes, the tape is positioned on the end of tape side of the selected filemark ready to read the selected backup set or write new data (if you are at the end of data mark).
bsf [x]: Moves the tape backward by x number of filemarks - default is
1. When the motion completes, the tape is positioned on the end of tape side of the selected filemark ready to read the selected
seod: Moves the tape to the end of currently recorded data. Use the option to position that tape for appending additional backups onto a previously written tape.
erase: Short erase blanks the tape in preparation for new data. Even though his only writes the end of data mark and null data zone onto the tape, any data beyond that point will be unrecoverable.
lerase: Provides a secure erase of the entire media (takes a long time for most drives). Like a short erase, but every tape block is overwritten.
rewind: Rewinds the tape to its beginning.
rewoff: Rewinds the tape to its beginning and ejects it (on soft eject capable drives).
reten: Fast winds a tape from one end to the other. Especially important for QIC, SLR, and TRAVAN drives.
tell: Reports the logical block address of the tapes current position.
seek x: Moves the tape to logical block address x. The value of x must be decimal and is required.
setblk x: Sets the blocksize for the loaded media. If x is zero, this sets the drive into variable block mode. Note that not all drives support changing the blocksize. If the requested change is not allowed, and error will be reported.
alert: Displays TapeAlert messages from devices that support the TapeAlert message standard.
unload: Synonym for rewoff Rewinds the tape to its beginning and ejects it (on soft eject capable drives).