sum.rb

def main
  lines = STDIN.read.split(/\n/)
  sum = {}
  lines.each {|line|
    name = line.match(/\((.+) \d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d/)[1].strip
    sum[name] = 0 if sum[name].nil?
    sum[name] = sum[name] + 1
  }
  sum.each {|key, v|
    puts "#{v} lines added by #{key}"
  }
end

main

git ls|xargs -Ifile git --no-pager --show-email blame file|ruby ./sum.rb