Simple biff program by ruby + growl

biff.rb

#
# biff.rb
#
require 'net/pop'
require 'nkf'

require 'rubygems'
require 'ruby-growl'
require 'pit'

config = Pit.get("mail", :require => {
  "server" => "pop3 server",
  "port"   => "pop3 port",
  "user"   => "user account",
  "pass"   => "password"
})

serv = config["server"]
port = config["port"].to_i
user = config["user"]
pass = config["pass"]

mails=[]
Net::POP3.start(serv, port, user, pass) {|pop|
  mails = pop.mails.collect {|m| m.header}
}
exit if mails.empty?

growl = Growl.new("localhost", "Biff", ["Notify"])

growl.notify("Notify", "Mail recieved", "#{mails.size} of mail(s) recived.")
sleep 5

mails.each {|m|
  subject = NKF.nkf('-Jw', m.match(/^Subject:\s+(.*)/)[1])
  from = NKF.nkf('-Jw', m.match(/^From:\s+(.*)/)[1])
  growl.notify("Notify", "#{from}", "#{subject}")
  sleep 2
}