Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!oliveb!ames!elroy!david 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 david@elroy.jpl.nasa.gov ames!elroy!david UUCP Disclaimer: No one listens to me anyway!