What does dd represent?

I recognize quite possibly what the command does, yet man dd, info dd inform me: 'Convert and also replicate a documents', as does GNU Coreutils.

Google claims its an acronym of every little thing in between medication and also negative webchat vernacular ; other than a person claiming it suggests 'information destroyer', something made use of in COMPUTER forensics - I would certainly be alarmed if my dd damaged my information!

Any kind of understanding?: -)

Update : Of training course I needed to examine the jargon file:

The Unix dd (1) was made with an unusual, clearly non - Unixy search phrase alternative syntax evocative IBM System/360 JCL (which had an intricate DD 'Dataset Definition' requirements for I/O tools)

Still appears attractive unclear, yet after that it claims:

though the command loaded a demand, the user interface layout was plainly a trick.

Heh: -)

2019-05-18 22:24:59
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Answers: 3

" dump information". JCL is unnecessary.

2019-05-21 09:00:14

Wikipedia (dd) insists it was called after IBM JCL command DD which represents Data Definition . I constantly assumed it would certainly suggest information replicate , however.

2019-05-21 06:04:33

Though the "ideal solution" was offered, this site states otherwise:

Actually, it represents 'Copy and also Convert' and also was relabelled to dd just due to the fact that cc was booked for the C compiler! This is the genuine details I obtained from the male web pages of our Unix - V7 on our college PDP 11.

Initial mail at comp.unix.misc (usenet): The Unix Acronym List

2019-05-21 05:58:09