dds-dd(1) [debian man page]

dds-dd(1)						      General Commands Manual							 dds-dd(1)

NAME

       dds-dd - tool to read a dds device.

SYNOPSIS

       dds-dd [ -f device ]

DESCRIPTION

       dds-dd  reads  a  dds  tape devices (DAT). Every block is read and written to stdout. A tape with unknown block size or blocks of different
       size can be read.

       The default device is /dev/rmt0, which may be overridden with the environment variable TAPE, which in  turn  may  be  overridden  with  the
       -f device option. The device must be a character special file.

OPTIONS

       -f device
	      Device of the tape archive (default is /dev/rmt0).  Must be a character special file connected to a dds tape device.

       -V,--version
	      Print the version number of mt-dds to stderr and exit immediately.

       --help print some screens of online help with examples through a pager and exit immediately.

EXAMPLES

       Example: Read the tape and make a listing:
		 dds-dd | tar ft -

       Example: Read the tape and make a listing:
		 dds-dd | cpio -it

ENVIRONMENT

       The environment variable TAPE overrides the default tape device /dev/rmt0.

       SEE ALSO
	      dds2tar(1), dds2index(1), mt(1), tar(1)

HISTORY

       This program was created to use it in conjunction with dds2tar.

AUTHOR

       J"org Weule (weule@cs.uni-duesseldorf.de), Phone +49 211 751409.  This software is available at ftp.uni-duesseldorf.de:/pub/unix/apollo

									2.4								 dds-dd(1)

MT(1)							      General Commands Manual							     MT(1)

NAME

       mt - magnetic tape manipulating program

SYNOPSIS

       mt [ -f tapename ] command [ count ]

DESCRIPTION

       Mt  is  used  to  give commands to a magnetic tape drive.  If a tape name is not specified, the environment variable TAPE is used;  if TAPE
       does not exist, mt uses the device /dev/rmt12.  Note that tapename must reference a raw (not block) tape device.  By  default  mt  performs
       the requested operation once.  Operations may be performed multiple times by specifying count.

       The available commands are listed below.  Only as many characters as are required to uniquely identify a command need be specified.

       eof, weof
	      Write count end-of-file marks at the current position on the tape.

       fsf    Forward space count files.

       fsr    Forward space count records.

       bsf    Back space count files.

       bsr    Back space count records.

       rewind Rewind the tape (Count is ignored).

       offline, rewoffl
	      Rewind the tape and place the tape unit off-line (Count is ignored).

       status Print status information about the tape unit.

       cacheon
	      Enable the readahead/writebehind cache on the tape unit.

       cacheoff
	      Turn off the readahead/writebehind cache on the tape unit.

       Mt returns a 0 exit status when the operation(s) were successful, 1 if the command was unrecognized, and 2 if an operation failed.

       The cacheon and cacheoff commands currently only apply to the TMSCP driver and then only for certain drives such as the TU81+.  No error is
       produced by the TMSCP driver if the cache commands are used.  Other drivers will return an error code  since  they  do  not  recognize  the
       MTCACHE and MTNOCACHE functions codes.  See mtio(4).

FILES

       /dev/rmt* Raw magnetic tape interface

SEE ALSO

       mtio(4), tmscp(4), dd(1), ioctl(2), environ(7)

4th Berkeley Distribution					 December 22, 1995							     MT(1)