Since none of the replies you have received so far actually solves the problem except under certain restricted circumstances, here is a little utility, macorpc2unix that we use here about a million times a day:

#!/usr/bin/perl -w -i
while (<>) {s/\r\n*/\n/g; print;}
[download]

It will convert PC or Mac text files to Unix format. I see that you could rewrite it with a -p swithc and dispense with the while but I will leave that as an exercise.

Regards,
Helgi Briem