[CentOS] Inquiry:How to compare two files but not in line-by-line basis?

mark m.roth at 5-cent.us
Thu Dec 3 12:42:19 UTC 2009

John Doe wrote:
> From: hadi motamedi <motamedi24 at gmail.com>
>> Can you please do me favor and let me know if I can go further and try for
>> advanced search like finding how many rows inside a file have data that
>> does not start with a zero after the third comma ?
> Something like: awk -F, ' { print $4 } ' | grep -v "^0" | wc -l Use one
> command at a time to see how they work with each other (you might have to
> modify the grep a bit)...


Drive me crazy, why use multiple commands?

awk -F 'BEGIN { FS = ","; }{if ( $3 !~ /^0 ) { count++; }} END { print count }' 

	mark "why, yes, since you ask, I *have* written 100 and
		200 line awk scripts"
Though I don't think (object-oriented programming) has much to offer good
programmers, except in certain specialized domains, it is irresistible to
large organizations. Object-oriented programming offers a sustainable way
to write spaghetti code.  - Paul Graham

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