Errors converting the perl script to ruby script

Perl code: use strict;

use Getopt::Long;

my ($tenant, $output);

GetOptions ("t=s" => \$tenant, "o=s" => \$output);

&usage() if (!defined($tenant) || !defined($output));

$tenant=~/(\w)(\w+)$/;

my $first = uc($1);

my $rest = $2;

my $password="Export-${first}${rest}!";

I want above code to change into ruby. I am new to ruby can somebody help me please

Ruby code which i wrote: require 'optparse' options = { :t => $tenant, :o => $output}

ARGV[0]=options("#{$tenant}")

ARGV[1]=optionsi("#{$output}")

optparse = OptionParser.new do|opts|

end

opts.parse! ARGV[0]

opts.parse! ARGV[1]

$tenant=('/\p{Alnum}/')

$first = $TENANT.slice(0,1).capitalize

$second =$TENANT.slice(1..-1)

PASSWORD="Export-"+ $first + $second.chomp + "!"

can you please explain it