Figure 2-1 shows an example of GNOME running. GNOME is very configurable, so
your screen may look quite different.
The long bar at the bottom of Figure 2-1 is a GNOME
Panel, which contains a collection of useful panel applets and menus. Panel
applets are tiny programs designed to be placed in a panel, for example, the
clock applet on the far right shows the current time. The arrows on each
side of the panel hide (and unhide) the panel.
The button in the panel containing a stylized foot is the Main Menu Button.
Just click on the Main Menu Button and you'll see a menu of pre-loaded
applications and actions, including a logout command.
The rest of the screen space is called the "Desktop." Just place on your
desktop the items you use most often and you can double-click on an item
(with the left mouse button) to use it:
If the item is a program, that program will start.
If it's data, the appropriate program will be start up with that data
loaded.
If it's a directory, the file manager application will start and show the
contents of that directory. Your desktop will probably have a folder icon
labelled "Home directory". Double-clicking on it will start a file manager
at your home directory.
The file manager application lets you manipulate your files. The left side
of its window shows directories, and the right side shows the selected
directory's contents:
To move the file or directory, just drag and drop it.
To copy a file, hold down the CTRL key while dragging.
To run a program or edit a data file, double-click it.
To perform other operations on a file (such as rename or delete), select it
using the right mouse button.
To select more than one item at a time, click on the items after the first
one while holding down the SHIFT key.
You can easily move or copy files between directories by starting two file
manager applications, each one showing a different directory. If you want to
put a file on your desktop, simply drag it from the file manager onto the
desktop. In fact, dragging and dropping items onto other items generally
"does the right thing" in GNOME, making it easy to get work done.
GNOME is very configurable; for example, you can have multiple panels
(horizontal and vertical), choose what goes in them, and have them hide
automatically. There are many panel applets you can include in your panel.
You can also change how the screen looks; later portions of this document
tell you how.
GNOME follows several UNIX conventions you should be aware of. The left
mouse button is used to select and drag items. The right mouse button brings
up a menu for the selected object (if a menu applies). Most UNIX mice have 3
buttons, and the middle button is used to paste text (if in a text area) or
to move things. If you only have two buttons, press the left and right
buttons simultaneously to simulate the middle button. To copy text, use the
left button to drag across the text you want to copy, move to the place you
want the text to be, and press the middle button.
When an application window is displayed, there will be some buttons in
its borders for controlling the window. These include buttons to minimize,
maximize, and close the window. Their appearance can be configured and is
controlled by a component called the "window manager."
Two examples of border styles are the Clean style (Figure
2-2) and the ICE style (Figure 2-3):
In the Clean border style, the underscore means minimize, the square means
maximize (use the whole screen), and the X button means close the window.
In the ICE style, the X button will close the window. Clicking the arrow
with the left mouse button minimizes the window, while clicking with the
right mouse button shows a menu of other options.
If you are using a default installation of GNOME you may notice that
minimizing a window actually causes that window to disappear from your
desktop. To regain that window you may use the GNOME Pager, which is located
on the Panel. The Pager will show you which tasks are running and where they
are on your desktops. You will find the application you minimized in the
task list on the right side of the GNOME Pager. Press the button for that
application and it will return to your desktop.
You may read more about the GNOME Pager in the section called GNOME Pager in Chapter 19.
The following sections go into more detail, describing each component of
the system.