Only internally, if at all; unused since German reunification
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.dd was the ISO 3166-1 code for the German Democratic Republic (East Germany), the letters coming from the German name of the country: Deutsche Demokratische Republik. In accordance with IANA policy, .dd was therefore available to be assigned as the country code top-level domain (ccTLD) for East Germany. However, this was never done, and so .dd was never added to the root nameservers. A country code top-level domain (ccTLD) is a top-level domain used and reserved for a country or a dependent territory. ... GDR redirects here. ... ISO 3166-1, as part of the ISO 3166 standard, provides codes for the names of countries and dependent areas. ... Anthem: Auferstanden aus Ruinen Capital East Berlin, in spite of status as part of an occupied city Language(s) German Government Socialist state Head of State - 1990 Sabine Bergmann-Pohl Head of Government - 1990 Lothar de Maizière Historical era Cold War - Established October 7 1949 - Final Settlement September 25... For other uses of IANA, see IANA (disambiguation). ... A country code top-level domain (ccTLD) is a top-level domain used and reserved for a country or a dependent territory. ... The AMS-IX mirror of the K root-server. ...
With the reunification of Germany, East Germany became part of the Federal Republic of Germany, which had already been assigned the ccTLD .de. The ISO 3166-1 code DD was withdrawn in 1990. The Federal Republic of Germany (West Germany) and the German Democratic Republic (East Germany) German reunification (Deutsche Wiedervereinigung) took place on October 3, 1990, when the areas of the former German Democratic Republic (GDR, in English commonly called East Germany) were incorporated into the Federal Republic of Germany (FRG, in... .de is the country code top-level domain (ccTLD) for the Federal Republic of Germany. ...
Because dd can copy entire partitions or disks (this is more due to Unix providing access to these devices than the functionality of dd per se), it is used in computer forensics when the contents of a partition need to be preserved in a byte-exact copy.
The command line syntax of dd is unlike that of any other Unix program, resulting in widespread fear and loathing; it is rumored to have been based on IBM's JCL, and though the syntax may have been a joke, there seems to have never been any effort to write a more Unix-like replacement.
The fear is due to the fact that dd is used for low-level operations on hard disks: one tiny mistake, and instead of restoring a boot sector one may have rendered an entire disk virtually unusable.
DD's sister is a heartless bitch and could not, even to her brother, apologize or swallow her pride long enough to announce to him that his niece was now expecting.
DD explained that he thought it was rude of her to call us at the last minute because she wanted to go watch Survivor at a bar.
DD was so affronted by this whole incident that he refused to attend Easter Mass even when I begged him that right now we need any and all help we can get to induce the embryo(s) to stick around, whether that help is spiritual or mystical as we’ve already used up our scientific card.