Então eu tenho um arquivo enorme algo assim ...
1/20/2016,somerandomdata
1/20/2016,somerandomdata
1/20/2016,somerandomdata
1/20/2016,somerandomdata
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1/21/2016,somerandomdata
1/21/2016,somerandomdata
1/21/2016,somerando...
23.01.2016 / 09:35