Novell SUSE LINUX Professional 9.3 Update 00662644461625 ユーザーズマニュアル
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00662644461625
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parts of the system. Normal users lack these privileges.
All users including the superuser have their own home directories where all pri-
vate data, like documents, bookmarks, or e-mail, are stored. Write access to these
home directories is strictly limited to their respective owners. Folders in a home
directory holding sensitive data can also be protected against read access by other
users. System directories holding central configuration files or executable files can
only be modified by the superuser. For more information about the Linux permis-
sion and user concept, refer to Section 19.2 on page 255.
vate data, like documents, bookmarks, or e-mail, are stored. Write access to these
home directories is strictly limited to their respective owners. Folders in a home
directory holding sensitive data can also be protected against read access by other
users. System directories holding central configuration files or executable files can
only be modified by the superuser. For more information about the Linux permis-
sion and user concept, refer to Section 19.2 on page 255.
While this concept may not look very appealing at first, it adds to security. A user
without
without
root
privileges cannot damage the entire system. Any damage caused
is strictly limited to the user’s own account and data. Any operation executed
with
with
root
privileges may potentially harm the entire system. Anyone intending
to harm a running Linux system must gain
root
privileges first. This is why it is
much harder to create viruses for Linux systems. They have to overcome the root
barrier first.
barrier first.
As well as offering different user identities for administrators and normal users,
Linux supports multiple users working on one machine simultaneously. These
users can connect to the system via different terminals or network connections.
Linux supports multiple users working on one machine simultaneously. These
users can connect to the system via different terminals or network connections.
1.3
Desktop
SUSE LINUX offers several choices for your desktop. GNOME and KDE, the
most common desktops, provide features and functions similar to those of the
desktop used in Microsoft Windows or Mac OS. This section introduces their
most important features and helps you to get accustomed to your new desktop
environment.
most common desktops, provide features and functions similar to those of the
desktop used in Microsoft Windows or Mac OS. This section introduces their
most important features and helps you to get accustomed to your new desktop
environment.
1.3.1
Desktop Terminology
The following list introduces some terms often used in a desktop context, regard-
less of the base system. However, some of them have different meanings in differ-
ent desktop environment or are even limited to one environment.
less of the base system. However, some of them have different meanings in differ-
ent desktop environment or are even limited to one environment.
desktop
The desktop is your primary work environment. It fills the screen, but
is more than just a background. Put icons of your most frequently used ap-
plications or objects on the desktop for easy access.
plications or objects on the desktop for easy access.
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SUSE LINUX