All domains visited by Chrome

domains.rb

#some bash first
#Get Chrome history file here: http://www.chromium.org/user-experience/user-data-directory
#sqlite3 /PATH/TO/History "select datetime(last_visit_time/1000000-11644473600,'unixepoch'),url from  urls order by last_visit_time desc" > history_export.txt

f = File.open('./history_export.txt')
e = f.each_line.lazy.map do |l|
  next if l =~ /\|file:/
  next if l =~ /\|chrome-extension:/
  next if l =~ /\|mailto:/

  s = l[%r[\|https?://(.*)],1].to_s[%r[(.*?)/],1]
  raise l if s.nil?
  s
end.to_a.compact.sort.uniq
e.each(&method(:puts))
puts e.size