Since what you are substituting always occurs at the end of a line, the easiest way to do this seems to me to be something like: 
perl -pi -e 's/turkey$/fox/' file_full_of_turkeys_that_you_want_to_be_
+foxes

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In reply to Re: Changing the contents of a file by l3v3l
in thread Changing the contents of a file by perlNinny

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