Fedora

#!/usr/bin/env ruby  -Ku
require 'fileutils'
back=File.join("/opt","projects","backup")
Dir["*"].each do |file|
  timestamp=File.new(file).mtime
  yr,mth,day=timestamp.year,timestamp.month, timestamp.day
  bak=File.join(back,yr.to_s+mth.to_s+day.to_s)
  Dir.mkdir(bak) if not test(?d,bak)
  FileUtils.cp(file, bak, :verbose=>true) if File.file?(file)
end