http://www.perlmonks.org?node_id=926595


in reply to col-uniq -- remove lines that match on selected column(s)

This is nice - and now I'll suggest changing it <grin>

Since this will most often be used following a sort, I suggest the options should match sort's, i.e. -t for delimiter, -k for column.

Also, you should make this a CPAN module: App::col-uniq