Perl: Removing duplicated entry between two files

A rip of from a ripp one liner Perl solution.

I have two files, with more or less duplicated entries in both. SOltuion:


cat textfile | perl -ne '$H{$_}++ or print'
Source: http://stackoverflow.com/questions/746689/unix-tool-to-remove-duplicate-lines-from-a-file
/alak

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