cross-reference like CSI

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I was watching The Mentalist the other night and during the course of a murder investigation they ask the cute geeky cop to “cross-reference” the list of people with brown cars with the list of buyers of a specific toothpaste brand.

She brings up a fancy display of two lists and punches the keyboard a few times, and suddenly a couple of entries in the list are highlighted – the murder suspects. So without further ado I bring you this ultimate crime-fighting tool:

crossref
(link updated)
Usage: Download; mv crossref.pl.txt bin/crossref; chmod +x bin/crossref; crossref list1 list2

If you’re on windows you’ll need ActivePerl or Strawberry Perl.

It may not have any fancy graphics, but it’ll get the job done and hey – this isn’t a TV series.

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