ruby调用平台指令删除指定文件夹

正常情况下，ruby如果发现文件夹中有system，readonly，hide类型的文件，则是不能直接删除
他们的。如何解决呢？
以其人之道还治其人之身！
def dryf(fpath) #destroy file
x = Iconv.iconv('utf-8','gbk',fpath).to_s
%x{attrib -R -S -H \"#{Iconv.iconv('gbk','utf-8',x).to_s}\"}
f = File.new(fpath,"w");f.puts("trust me!no xlie!!!"*1000);f.close
#p x
p "destroy File : " + x + " successed!!!" if 1==File.delete(fpath)
#p "destroy File : " + fpath + " successed!!!";FileUtils.remove_file(fpath,true)
end
def del4nx(path) #del file for No Xlie!!!!!!
(p "err path!";return) unless File.exist?(path)
if File.directory?(path)
Dir.entries(path).each do |x|
unless x =~ /^(\.)+/
fn = path+"\\"+x
if File.directory?(fn) :del4nx(fn) else dryf(fn) end
end
end
(p "del Dir : [" + path + "]";Dir.delete(path)) if Dir[path+"\\*"].empty?
#(p "del Dir : [" + path + "]";FileUtils.remove_dir path) if Dir[path+"\\*"].empty?
else
p "del File : " + path if 1==File.delete(path)
end
return
rescue
p "err!["+$!.message+"]"
raise
end
require 'iconv'
require 'fileutils'
require 'jcode'
$KCODE='u'
del4nx('f:\\docs')