EnglishFrenchSpanish

OnWorks favicon

mt-dds - Online in the Cloud

Run mt-dds in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command mt-dds that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


mt-dds - tool to control a dds device.

SYNOPSIS


mt-dds comp-on|comp-off|comp-query|comp-log
mt-dds < tell|label > [ -b # ]

DESCRIPTION


mt-dds controls the compression mode of dds tape devices (DAT).

mt-dds may also report the current tape position in absolute records (relative to begin of
tape) in a format that may be used later by dds2tar(1) to access tar archives that are not
the first file on tape.

The default device is /dev/nst0, 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


DDS tape device control options
comp-on
Enable the hardware compression mode if supported by the device.

comp-off
Disable the compression mode, switch to normal mode.

comp-query
Print to stderr if compression mode currently is disabled or enabled. A 0 means
compression is disabled, a 1 means compression in enabled.

comp-log
Print to stdout four lines of information about transferred kilobytes before and
after hardware compression from and to the device since initialization.

dds2tar service functions
tell Print three lines with the current tape position, a block size value (20 by
default, may be overridden with -b option) and a block length value (blocksize*512)
to stdout. If this output is redirected to a location file locfile, this file may
be used by dds2tar(1) to access archives on tape.

label If the current tape position is the beginning of an archive and the archive is
labeled, mt-dds writes the label to stdout and moves the tape back to the current
position (or back over the filemark).

ts If the current tape position is the beginning of an archive and the archive is
labeled, mt-dds writes the timestamp in octal format to stdout and moves the tape
back to the current position (or back over the filemark). If you are using only
one computer, the timestamp can be used as a unique archive identifier.

-b # Specify the block size # value that is used as a default for the written value with
the mt-dds tell command (see above). Also the internal buffer size is specified
with this option which is used to read one block in order to get the block size of
the current tape block. So specify the block size of the archive or a larger
number.

other options
-f device
Device of the tape archive (default is /dev/nst0). 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 1: checking the compression mode of the default tape device
mt-dds comp-query

Example 2: Write the location information as dds2tar command line options to stdout.
mt-dds

ENVIRONMENT


The environment variable TAPE overrides the default tape device /dev/nst0.

PAGER The environment variable PAGER overrides the builtin pager command ("/bin/more") to
display the output of the --help option.

Use mt-dds online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Phaser
    Phaser
    Phaser is a fast, free, and fun open
    source HTML5 game framework that offers
    WebGL and Canvas rendering across
    desktop and mobile web browsers. Games
    can be co...
    Download Phaser
  • 2
    VASSAL Engine
    VASSAL Engine
    VASSAL is a game engine for creating
    electronic versions of traditional board
    and card games. It provides support for
    game piece rendering and interaction,
    and...
    Download VASSAL Engine
  • 3
    OpenPDF - Fork of iText
    OpenPDF - Fork of iText
    OpenPDF is a Java library for creating
    and editing PDF files with a LGPL and
    MPL open source license. OpenPDF is the
    LGPL/MPL open source successor of iText,
    a...
    Download OpenPDF - Fork of iText
  • 4
    SAGA GIS
    SAGA GIS
    SAGA - System for Automated
    Geoscientific Analyses - is a Geographic
    Information System (GIS) software with
    immense capabilities for geodata
    processing and ana...
    Download SAGA GIS
  • 5
    Toolbox for Java/JTOpen
    Toolbox for Java/JTOpen
    The IBM Toolbox for Java / JTOpen is a
    library of Java classes supporting the
    client/server and internet programming
    models to a system running OS/400,
    i5/OS, o...
    Download Toolbox for Java/JTOpen
  • 6
    D3.js
    D3.js
    D3.js (or D3 for Data-Driven Documents)
    is a JavaScript library that allows you
    to produce dynamic, interactive data
    visualizations in web browsers. With D3
    you...
    Download D3.js
  • More »

Linux commands

Ad