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From: chuqui@nsc.UUCP
Newsgroups: net.unix
Subject: Re: kernighan & pike book
Message-ID: <566@nsc.UUCP>
Date: Tue, 24-Jan-84 13:14:52 EST
Article-I.D.: nsc.566
Posted: Tue Jan 24 13:14:52 1984
Date-Received: Fri, 27-Jan-84 08:37:18 EST
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Organization: National Semiconductor, Sunnyvale
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Speaking of reviewing the book, I have just finished it and was about to,
so without further ado:

*** The Review ***

The Unix Programming Environment
Brian W. Kernighan, Rob Pike
Prentice Hall Software Series, $19.95 (355 pages softcover)

For those that missed it, Rob Pike gave a talk at Unicom in Toronto on 'The
Philosophy of Unix Programming (or cat -v considered harmful)'. In it, he
discussed the pro's and con's of some of the trends he sees in Unix
programming and alternatives. He promoted very heavily the tool orientation
of small programs with single purposes put together in flexible ways. Two
programs he took to task were 'more' (for the very obvious reasons of
excessive functionality to the point on unmaintainability) and 'cat -v'
because it took a filter that moves information and modified it to be a
filter that modified information.

The book is an expansion of this talk, and describes in detail (with many
examples) how Rob and Brian feel Unix programs should be written. They
discuss shell programming and C programming in detail, and also look at
programs like sed, awk, lex, and yacc. There is some tutorial for all of
these, but the real audience seems to be programmers with Unix experience.

I was impressed with the talk at Uniforum, and I am even more impressed
with the book. I do NOT recommend it as a first book on Unix programming (I
much prefer the Bourne book for that), but it should be required reading
for every Unix programmer. There are a lot of good programs in the example
(such as vis, their replacement for cat -v, and p, their pager (with
filename spelling correction, no less, which you'll never find in a tty
driver (*hint*))). More than that, I found it showed me a lot about Unix
about Unix and how to use it efficiently (and if you believe their
philosophy, properly). I learned quite a bit about the shell (which doesn't
suprise me too much) but I also learned quite a bit about C (which did
suprise me, since I'm not exactly a C novice). There is a lot in this book
that I haven't seen elsewhere.

This book may not be for everyone. The people who like a few large programs
(such as more) are not going to like this book any more than they liked the
talk. I liked it a lot (if that wasn't obvious by now), but then my
programming tends towards their philosophy anyway. Either way, you should
read this book. 

On the chuqui scale: ***** (out of a possible 5)
	This book should be on everyones bookshelf. Congrats Brian and Rob
	for a good job very well done!


-- 
From the house at Pooh Corner:	Chuq (a Silly Old Bear)
				{fortune,menlo70}!nsc!chuqui
				have you hugged your Pooh today?
				Nuke the '58! Nuke the '58!

The difficult we gave up on yesterday, the impossible we are giving up on now.