10 Awk Tips, Tricks and Pitfalls

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Unix User Permalink
October 24, 2008, 00:20

Something I often need to do is match lines against a regexp, and print out a matching group within that line. But I have never been able to find a way to do this in awk, and end up resorting to Perl.

So - is there a way to do something like this?

/abc([0-9]+)def/ { print group(1); }

so that input of:

abc654def

produces:

654

Thanks!

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September 19, 2011, 07:32

you can install gawk,and do like this:
Syntax：
gawk 'mathc($0,regex,array){print array[1]}' file

example:
gawk 'match($0, "https?:\/\/(.*?google.*?)/", array) {print array[1]}' filename

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