File 1 is a CSV seperated log file. For this need the IP address is always in split 8 of the file. However if I could not rely on that it would be good as there are other log types this coudl apply to.

The second mapping file is very simple:

Can you give me an example of the hash and how best to apply it?

Thank You!

In reply to Re^2: Search and Replace in one file based upon contents of another by EntropyDF
in thread Search and Replace in one file based upon contents of another by EntropyDF

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