I learned Perl from Merlyn's book on a Mac and didn't have any problems at all with platform issues.

The only thing in that book you can't do on a Mac, from memory, is dbmopen which is pretty much deprecated even on UNIX as I understand it.
--

($_='jjjuuusssttt annootthheer
     pppeeerrrlll haaaccckkeer')=~y/a-z//s;print;
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