as root or changing to root temporarily. I believe that su actually means
substitute user and not switch user as previously said. Then there is Fedora
which has su and su -. If you run as su then you cannot affect system wide
changes. For that you need su - which means su - root. In many distros then
su is understood as root, but the su - is the traditional Unix way. You can
actually type su - bob to run as user bob. Then there is gksu and kdesu. It
all makes for an interesting experience.
Roy
Using Kubuntu 10.10, 64-bit
Location: Canada
On 20 February 2011 15:12, Rob <sun408b@yahoo.com> wrote:
>
>
>
>
> >OSX has multiple levels of user permissions. Think of the OS as a >tree.
> The "root" is, well, the roots of the tree. Some actions can >only be taken
> at the "root" level. The root user has complete root >access.
>
> You mean the system kernel? Linux,Mac and Unix has this but not windows.
>
> >There is only one "root" user and this user does not exist by >default.
> Every "admin" user has access to root powers, but only >indirectly and only
> if the root does not exist. For the root to >exist, you have to "enable" it.
> Think of the root user a potential >single point of ultimate authority. Once
> the root user is enabled, >the root can override anything and nothing can
> override the root.
>
> Why does windows not use this but Linux,Mac and Unix do?
>
> >Most users don't know about the root user because normal use of the >OSX
> does not require root access. Even "power users" never resort >to enabling
> or logging in as a root user. There is a command-line >function ("sudo")
> that provides "super-user" access at the command >line without enabling the
> root user.
>
> Is this some thing Linux,Mac and Unix set up to make it more secure this
> way than windows that is full admin by default.
>
> >In roughly 15 years administering Macs, I have logged in as root >twice to
> "crack" an admin user on systems where the admin password >was lost. Even in
> those cases I'm not sure that operating as the >root user was necessary. ;)
>
> Do you not need a passward for root ?
>
> >I believe there are two reasons to enable the root. One is to >secure the
> system at the deepest level. The other is to operate >directly on the OS
> itself with total authority without resorting to >work arounds such as the
> sudo command.
>
>
>
[Non-text portions of this message have been removed]
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