Never alter any of the systems file*, **cept for those needed to insure that you are not detected, and those to insure that you have access into that computer in the future.

• 绝不修改任何系统文件,除非你认为有绝对把握的文件，或者要改那些文件是为了使你自己在以后更容易的再次进入这个系统而必须更改的。