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From: david@elroy.Jpl.Nasa.Gov (David Robinson)
Newsgroups: comp.unix.questions
Subject: Re: UNIX NAME ABBREVIATIONS
Message-ID: <4928@elroy.Jpl.Nasa.Gov>
Date: Sat, 28-Nov-87 04:27:34 EST
Article-I.D.: elroy.4928
Posted: Sat Nov 28 04:27:34 1987
Date-Received: Mon, 30-Nov-87 01:47:38 EST
References: <10376@brl-adm.ARPA> <16550@topaz.rutgers.edu> <388@cogen.UUCP> <897@pembina.UUCP>
Organization: Image Analysis Systems Grp, JPL
Lines: 20
Summary: IBM JCL

In article <897@pembina.UUCP>, steve@alberta.UUCP (Steve Sutphen) writes:
> One command (that first appeared in Version 5 in 5/15/74) that isn't
> immediately obvious in its entymology is `dd'.  My guess is that the 
> author really wanted to call it `cc' (for Convert and Copy -- the
> title on the `man' page) but that letter pair was already used.
> 	steve sutphen.


I have read somewhere that the `dd' command is a spoof on the IBM
JCL DD statement.  The command line arguments are very similar in
style to those of JCL.

// DD SYSIN=*


-- 
	David Robinson		elroy!david@csvax.caltech.edu     ARPA
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				ames!elroy!david UUCP
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