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From: chris@umcp-cs.UUCP (Chris Torek)
Newsgroups: net.sources.bugs
Subject: Re: YASS (yet another shell script)
Message-ID: <359@umcp-cs.UUCP>
Date: Mon, 17-Mar-86 18:42:45 EST
Article-I.D.: umcp-cs.359
Posted: Mon Mar 17 18:42:45 1986
Date-Received: Wed, 19-Mar-86 04:04:53 EST
References: <620@ssc-vax.UUCP> <153@sci.UUCP> <860@decuac.UUCP>
Distribution: net
Organization: U of Maryland, Computer Science Dept., College Park, MD
Lines: 19

In article <860@decuac.UUCP> avolio@decuac.UUCP (Frederick M. Avolio)
writes:

>In article <153@sci.UUCP>, raymund@sci.UUCP (Raymund Galvin) writes:
>> The following alias will print any single line from a text file:
>>	alias line 'awk NR==\!:1 \!:2-$'
>> The following alias will print a range of lines from a text file:
>>	alias list 'awk NR==\!:1,NR==\!:2\{print\ NR\":\"\$0\} \!:3-$'
>The problem with the awk versions is that they process the whole file,
>even after you are no longer interested in output.

Not if you do it right:

	alias line "awk 'NR == \!:1 { print; exit }' \!:2*"
	alias list "awk 'NR == \!:1, NR == \!:2 { print NR "'":" $0 } NR == \!:2+1 { exit }'"' \!:3*"
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 1415)
UUCP:	seismo!umcp-cs!chris
CSNet:	chris@umcp-cs		ARPA:	chris@mimsy.umd.edu