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. [Jargon File] (2005-08-08)

Style="border-width:thin; border-color:#333333; border-Style:daShed; padding:5px;" align="left">In addition Suitable contentS:
[ 2 ] [ = ] [ ad ] [ ai ] [ al ] [ am ] [ an ] [ ar ] [ arc ] [ arg ] [ aS ] [ at ] [ av ] [ B ] [ b ] [ ba ] [ block ] [ bo ] [ boot ] [ C ] [ ca ] [ cat ] [ ch ] [ ci ] [ ck ] [ CL ] [ cl ] [ co ] [ com ] [ comma ] [ command ] [ D ] [ DD ] [ de ] [ deSign ] [ device ] [ diSk ] [ du ] [ ec ] [ ed ] [ ee ] [ er ] [ eS ] [ et ] [ fi ] [ file ] [ fo ] [ for ] [ gh ] [ gn ] [ h ] [ hr ] [ IBM ] [ id ] [ ie ] [ il ] [ in ] [ inc ] [ int ] [ interface ] [ io ] [ I/O ] [ iS ] [ it ] [ J ] [ Jargon File ] [ JCL ] [ ke ] [ key ] [ keyword ] [ la ] [ Lex ] [ load ] [ ly ] [ M ] [ ma ] [ maintenance ] [ man ] [ mm ] [ mo ] [ mod ] [ module ] [ na ] [ nc ] [ ne ] [ ni ] [ no ] [ nS ] [ O ] [ om ] [ onto ] [ op ] [ option ] [ pa ] [ partition ] [ pe ] [ ph ] [ PR ] [ pr ] [ PROM ] [ pt ] [ py ] [ query ] [ rc ] [ re ] [ rl ] [ ro ] [ ROM ] [ root ] [ S ] [ Sc ] [ Se ] [ Set ] [ Si ] [ Sig ] [ Sk ] [ Spec ] [ Specification ] [ St ] [ Su ] [ Suit ] [ Sy ] [ Syntax ] [ SyStem ] [ SyStem/360 ] [ T ] [ table ] [ tap ] [ tape ] [ th ] [ to ] [ ug ] [ uS ] [ vi ] [ word ]