Random Number Occurence Counter

counter.rb

#!/usr/bin/env ruby
$one = 0
$two = 0
$three = 0
$four = 0
$five = 0
$six = 0
$seven = 0
$eight = 0
$nine = 0
ARGV[0].to_i.times do
 num = rand(1..9)
 if num == 1
  $one += 1
 elsif num == 2
  $two += 1
 elsif num == 3
  $three += 1
 elsif num == 4
  $four += 1
 elsif num == 5
  $five += 1
 elsif num == 6
  $six += 1
 elsif num == 7
  $seven += 1
 elsif num == 8
  $eight += 1
 elsif num == 9
  $nine += 1
 else
  puts "fatal error"
 end
end
puts "one:   #{$one}"
puts "two:   #{$two}"
puts "three: #{$three}"
puts "four:  #{$four}"
puts "five:  #{$five}"
puts "six:   #{$six}"
puts "seven: #{$seven}"
puts "eight: #{$eight}"
puts "nine:  #{$nine}"