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8.5.1.3: MTBSF

Backward space over count file marks. The tape is positioned at at the EOT (End Of Tape) side of the last skipped file mark, which means that `mt -f /dev/qft0 bsf' (i.e. count set to `1') always stays within the same tape volume and has the effect to position the tape at the beginning of the current volume.

This might differ from the original behavior of ftape-2.x resp. sftape, but is the expected behavior of a Un*x tape device.

Note that you need to use the non-rewinding devices when using this with the mt program, see Rewinding devices.

Example
Space to the beginning of the previous file. count has to be set to `2' to accomplish this.

mt -f /dev/nqft0 bsf 2

References
see File marks
see MTFSF
see Rewinding devices
see MTFSFM
see MTBSFM
see MTWEOF


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