$text = "How are you";
$break ='\n';
$text =~ s/\s/$break/g;
print $text;

##</code><code>##

How\nare\nyou

##</code><code>##

$text = "How are you";
$break ="\n";
$text =~ s/\s/$break/g;
print $text;

##</code><code>##

How
are
you