The SuperSearch yielded a relevant thread regarding this. To hurl in another few cents, Macintosh (I believe) uses a single "\r" or carriageReturn to terminate a line. There is also some quite strenuous discussion of the whole Unix Dos Mac Windows thing. Getting off topic now, since the question only regards doing this with shell oneliner.

I searched the Q&A for a dummies guide to this, How to control UNIX vs DOS line feeds in Perl is pending approval by powers mightier than I