in reply to quick and safe way to deal with this?

I tried using diff but it did't work

Strange, your copy must be broken because this is exactly what diff does. And it will be far faster than any perl solution,

Or maybe you just used it wrong?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."
  • Comment on Re: quick and safe way to deal with this?

In Section Seekers of Perl Wisdom