I am using strawberry perl for windows.

I have following rtf text for example for performing regex find and replace

1

2

3

4

dog

1

2

3

4

5

puppy

7

8

I am using following regex in notepad++ for testing which works. I don't know how to use the same in perl. I have tried all the way but could not make it happen. below is one of my one liner.

 perl -i.bak -pe "BEGIN{undef $/;} s/(dog)(.*[\r\n]+){6}(.*)/$&$1=$3/smg" 4.txt

8

Here I want to identify dog = puppy. How to identify string that are fixed lines apart and do the replacements?

In reply to Regex find and replace involving new line by PRA007

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