[TUHS] Command line options and complexity

[Nelson H. F. Beebe]

Arnold Robbins writes:

>> There was no tac in V7 Unix. It was first posted to USENET, I don't
>> know by who, and picked up by Linux and *BSD.

That brought back memories, and to verify them, I checked the tac.c
source code in the latest GNU coreutils test release.  It says

/* Written by Jay Lepreau (lepreau at cs.utah.edu).
   GNU enhancements by David MacKenzie (djm at gnu.ai.mit.edu). */

So my memory was right that my old friend Jay was the author.  Sadly, 
we lost him in September 2008: see

	https://www.legacy.com/obituaries/saltlaketribune/obituary.aspx?page=lifestory&pid=117597321
	
Jay founded the influential Flux group in advanced networking research:

	http://www.flux.utah.edu/profile/lepreau

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