reading a file with encoding utf8 more info http://modernperlbooks.com/books/modern_perl_2014/09-managing-perl-programs.html#SW5wdXRhbmRPdXRwdXQ
use v5.20;
my $infile = './utf8_text.txt';
open my $in_fh, '<:encoding(UTF-8)', $infile or die "can not open";open my $in_fh, ‘<’, $infile or die “can not open”;
while (<$in_fh>) {
say;
}