• Perl has several regex modifies
• g global: allows for multiple substitutions
• i case insensitive matching
• s treat string as one line
• m treat string as multiple lines

      my $breakfast = 'Lox Lox Lox lox and bagels';
      $breakfast =~ s/Lox //g;
      print "$breakfast\n";

      my $paragraph = "First Line\nSecond Line\nThird Line\n";
      my ($first, $second) = ($paragraph =~ /(^.*$)\n(^.*$)/m);
      print "$first, $second\n";
      

      lox and bagels      
      First Line, Second Line