Re: reading from file

On a command line, do a

 perl -lane 'print "@F[0,2..$#F-2,$#F]"' input
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if your file is 'input'. If its a windows system, do a

 perl -lane "print qq{@F[0,2..$#F-2,$#F]}" input
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instead.

Regards

mwa

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Re^2: reading from file by CountZero (Bishop) on Oct 10, 2007 at 08:56 UTC
Very nice trick this `2..$#F-2` to deal with the variable number of fields in the input! CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James	[reply] [d/l]

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Re^2: reading from file
by CountZero (Bishop) on Oct 10, 2007 at 08:56 UTC

2..$#F-2

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

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