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MT

Section: User Commands (1)

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NAME

mt - control magnetic tape drive operation

SYNOPSIS

mt [-V] [-f device] [--file=device] [--rsh-command=command] [--version] operation [count]

DESCRIPTION

This manual page documents the GNU version of mt. mt performs the given operation, which must be one of the tape operations listed below, on a tape drive.

The default tape device to operate on is taken from the file /usr/include/sys/mtio.h when mt is compiled. It can be overridden by giving a device file name in the environment variable TAPE or by a command line option (see below), which also overrides the environment variable.

The device must be either a character special file or a remote tape drive. To use a tape drive on another machine as the archive, use a filename that starts with `HOSTNAME:'. The hostname can be preceded by a username and an `@' to access the remote tape drive as that user, if you have permission to do so (typically an entry in that user's `~/.rhosts' file).

The available operations are listed below. Unique abbreviations are accepted. Not all operations are available on all systems, or work on all types of tape drives. Some operations optionally take a repeat count, which can be given after the operation name and defaults to 1.

eof, weof
Write count EOF marks at current position.:
fsf
Forward space count files. The tape is positioned on the first block of the next file.:
bsf
Backward space count files. The tape is positioned on the first block of the next file.:
fsr
Forward space count records.:
bsr
Backward space count records.:
bsfm
Backward space count file marks. The tape is positioned on the beginning-of-the-tape side of the file mark.:
fsfm
Forward space count file marks. The tape is positioned on the beginning-of-the-tape side of the file mark.:
asf
Absolute space to file number count. Equivalent to rewind followed by fsf count.:
seek
Seek to block number count.:
eom
Space to the end of the recorded media on the tape (for appending files onto tapes).:
rewind
Rewind the tape.:
offline, rewoffl
Rewind the tape and, if applicable, unload the tape.:
status
Print status information about the tape unit.:
retension
Rewind the tape, then wind it to the end of the reel, then rewind it again.:
erase
Erase the tape.:

mt exits with a status of 0 if the operation succeeded, 1 if the operation or device name given was invalid, or 2 if the operation failed.

OPTIONS

-f, --file=device
Use device as the file name of the tape drive to operate on. To use a tape drive on another machine, use a filename that starts with `HOSTNAME:'. The hostname can be preceded by a username and an `@' to access the remote tape drive as that user, if you have permission to do so (typically an entry in that user's `~/.rhosts' file).:
--rsh-command=command
Notifies mt that it should use command to communicate with remote devices instead of /usr/bin/ssh or /usr/bin/rsh.:
-V, --version
Print the version number of mt.:

REPORTING BUGS

Report cpio bugs to [email protected]

GNU cpio home page: <http://www.gnu.org/software/cpio/>

General help using GNU software: <http://www.gnu.org/gethelp/>

Report cpio translation bugs to <http://translationproject.org/team/>


Index

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

REPORTING BUGS


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