cat Arsenal 
Cech
Bellerin,Per,Koscielny,Nacho
Ramsey,Coquelin
Alexis,Ozil,Welbeck
Giroud

##</code><code>##

filehandler.pl
sub read_file {
	@lines = <>;
	chomp(@lines);
	print join (',',@lines) . "\n";
}
read_file;

##</code><code>##

/filehandler.pl Arsenal 
Cech,Bellerin,Per,Koscielny,Nacho,Ramsey,Coquelin,Alexis,Ozil,Welbeck,Giroud