YASS (yet another shell script)
Chris Torek
chris at umcp-cs.UUCP
Tue Mar 18 09:42:45 AEST 1986
In article <860 at decuac.UUCP> avolio at decuac.UUCP (Frederick M. Avolio)
writes:
>In article <153 at sci.UUCP>, raymund at 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)
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