最近在看 Mac OS X and iOS Internals，发现 Apple 的工具居然有用 Ruby 写的。文件在：/usr/libexec/AppSandbox/container_check.rb（OSX 10.9 以上）

#!/usr/bin/env ruby
#
# Copyright (c) 2011 Apple Inc. All rights reserved.
#
# @APPLE_LICENSE_HEADER_START@
#
# This file contains Original Code and/or Modifications of Original Code
# as defined in and that are subject to the Apple Public Source License
# Version 2.0 (the 'License'). You may not use this file except in
# compliance with the License. Please obtain a copy of the License at
# http://www.opensource.apple.com/apsl/ and read it before using this
# file.
#
# The Original Code and all software distributed under the License are
# distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
# EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
# INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
# Please see the License for the specific language governing rights and
# limitations under the License.
#
# @APPLE_LICENSE_HEADER_END@
#

ENV["PATH"] = "/bin:/usr/bin:/usr/sbin"

require 'ostruct'
require 'pp'
require 'optparse'
require 'tempfile'
require 'find'


class ContainerChecker
    def initialize(home, output, outIO)
        @homeDirPath = home
        @fulloutput = output
        @containerPath = File.join(@homeDirPath, "Library", "Containers")
        @outputIO = outIO
    end
# 下略

Ruby 万歳！