>Note that the operating system kernel, which does what you are referring to in
>your "root" designation, also lives in the filesystem and not "below" it in any
>way--that is why when installing the OS the first thing it does is format the
>partitions for the filesystem(s) that will be used. Note, too, that on a UNIX
>system (or Linux, which is actually "UNIX-like") you can have different file
>system formats on different partitions--or no format, such as on a swap
>partition).
The bottom Layer (the "base" or the "root") is the kernel and has nothing to do with the middle layer or user layer .
>The rest of what you described is merely a function of the permissions given to
>the various classes of users and nothing more. Permissions in UNIX are much more
>fine-grained than in Windows, since UNIX was designed from the first to be a
>multi-user operating system.
Are you saying the top layer the user layer is the permissions and you saying is better in windows?
>By contrast, Windows originally was designed for a single user only. Even though
>the architecture changed greatly with Windows 2000 and newer, much of that
>heritage continues...but gradually, each successive release of Windows has
>incorporated more UNIX-like features.
Windoes 2000,XP,vista and 7 is base on TN.
Windoes 9.x and befire 9.x was a single user system.
>However, the simple fact is that you will get some rather confused looks from
>Linux or UNIX users when you speak of a "three layer system" in the context that
>you have here--it is largely meaningless when you confuse permissions with
>system architecture as you have here.
What do you mean? Can yo elaborate?
And why does windows not use the three layer system?
No comments:
Post a Comment