In case the OP is not familiar with what CP/M-ish means, let me expand that a bit.

• "Unix-ish" systems have a line feed ("\n" or Control-J or "\012") between lines in text files
• "Mac-ish" systems have carriage returns ("\r" or Control-M or "\015")
• "CP/M-ish" (usually meaning DOS or Windows) have both ("\r\n")

For more details, search for "newlines" in perlport