Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,522,729,806 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

DD
(redirected from distal muscular dystrophy)

    Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.04 sec.

DD

(Double Density) The designation for low-density diskettes, typically the 5.25" 360K and 3.5" 720K floppies. See double density. Contrast with HD.

1.(storage)DD - double density.
2.(database)DD - data dictionary.
3.(programming)DD - Deployment Descriptor.
4.dd - A Unix copy command with special options suitable for block-oriented devices; it was often used in heavy-handed system maintenance, as in "Let's "dd" the root partition onto a tape, then use the boot PROM to load it back on to a new disk".

dd had a distinctly non-Unixy keyword option syntax reminiscent of IBM System/360 JCL (which had an elaborate DD "Dataset Definition" specification for I/O devices). Though the command filled a need, the interface design was clearly a prank.


How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
 Email
Feedback
? Mentioned in
 
Encyclopedia browser? ? Full browser
 
 
Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2009 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.