gets.rb

#!/usr/bin/env ruby

require 'date'

log, file = ARGV
regex = Regexp.new("GET.*#{file}\s.*200\s")
lines = File.open(log).readlines
gets  = lines.grep regex

totals = {}
totals.default = 0

gets.each do |l|
  date = Date.parse(l.scan(/\[(.*?)\]/).to_s)
  totals[date] += 1
end

totals.sort_by { |d| d }.each do |date, count|
  puts "#{date} — #{count}"
end