I think there might be a couple of problems with your code.

The grep solutions suggested might be better if line order is to be preserved. Something like (again, not tested). 

...
my %seen = ();
print grep ! $seen{ $_ } ++, <$fh>;
...

[download]

Cheers,

JohnGG

In reply to Re^2: finding unique items in an array, from a text file by johngg
in thread finding unique items in an array, from a text file by spazmospazmo

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