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- MT User Commands MT
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- NNAAMMEE
- mt - magnetic tape control
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- SSYYNNOOPPSSIISS
- mmtt [ --ff _t_a_p_e_n_a_m_e ] _c_o_m_m_a_n_d [ _c_o_u_n_t ]
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- DDEESSCCRRIIPPTTIIOONN
- mmtt sends commands to a magnetic tape drive. If _t_a_p_e_n_a_m_e is
- not specified, the environment variable is used. If does
- not exist, mmtt uses the device //ddeevv//rrmmtt1122. _t_a_p_e_n_a_m_e refers
- to a raw tape device. By default, mmtt performs the requested
- operation once; multiple operations may be performed by
- specifying _c_o_u_n_t.
-
- The available commands are listed below. Only as many char-
- acters as are required to uniquely identify a command need
- be specified.
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- mmtt returns a 0 exit status when the operation(s) were suc-
- cessful, 1 if the command was unrecognized or if mmtt was
- unable to open the specified tape drive, and 2 if an opera-
- tion failed.
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- OOPPTTIIOONNSS
- eeooff, wweeooff Write _c_o_u_n_t EOF marks at the current position
- on the tape.
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- ffssff Forward space over _c_o_u_n_t EOF marks. The tape is
- positioned on the first block of the file.
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- ffssrr Forward space _c_o_u_n_t records.
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- bbssff Back space over _c_o_u_n_t EOF marks. The tape is
- positioned on the beginning-of-tape side of the
- EOF mark.
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- bbssrr Back space _c_o_u_n_t records.
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- nnbbssff Back space _c_o_u_n_t files. The tape is positioned
- on the first block of the file. This is
- equivalent to _c_o_u_n_t+_1 bbssff's followed by one
- ffssff.
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- aassff Absolute space to _c_o_u_n_t file number. This is
- equivalent to a rreewwiinndd followed by a ffssff _c_o_u_n_t.
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- For the following commands, _c_o_u_n_t is ignored:
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- eeoomm Space to the end of recorded media on the tape.
- This is useful for appending files onto previ-
- ously written tapes.
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- Sprite v1.0 19 December 1989 1
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- MT User Commands MT
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- rreewwiinndd Rewind the tape.
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- oofffflliinnee, rreewwooffffll
- Rewind the tape and, if appropriate, take the
- drive unit off-line by unloading the tape.
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- ssttaattuuss Print status information about the tape unit.
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- rreetteennssiioonn Rewind the cartridge tape completely, then wind
- it forward to the end of the reel and back to
- beginning-of-tape to smooth out tape tension.
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- eerraassee Erase the entire tape.
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- FFIILLEESS
- //ddeevv//rrmmtt** magnetic tape interface
- //ddeevv//rraarr** Archive cartridge tape interface
- //ddeevv//rrsstt** SCSI tape interface
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- SSEEEE AALLSSOO
- aarr(4S), mmttiioo(4), sstt(4S), ttmm(4S), xxtt(4S) eennvviirroonn(5V)
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- BBUUGGSS
- Not all devices support all options. Some options are
- hardware-dependent. Refer to the corresponding device
- manual page.
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- WWAARRNNIINNGGSS
- The bbssff option for SCSI tape in SunOS 4.0.3 is incompatible
- with this release and releases prior to 4.0.3.
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- Sprite v1.0 19 December 1989 2
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