Thanks a lot Anonymous Monk.
This works awesomely on my cofig files of lines 12500 each and gives output in no time.
Apart from testing for regular differences ,I tried inserting a blank line in the config file, and it worked there too.
Thanks once again. :)

In reply to Re^8: Finding the parent of a text in a file by ExperimentsWithPerl
in thread Finding the parent of a text in a file by ExperimentsWithPerl

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