SUSE Linux Enterprise Desktop Administration - PowerPoint - PowerPoint by JIpo13

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									SUSE Linux Enterprise Desktop
       Administration



           Chapter 2
     Use the Linux Desktop
                        Objectives

• Objective 1—Overview of the Linux Desktop
• Objective 2—Use the GNOME Desktop Environment
• Objective 3—Access the Command-Line Interface
  from the Desktop




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   Objective 1—Overview of the Linux
               Desktop
• X Window System (called X or X11)
   – The base of any graphical user interface on Linux
   – Allows you to control the input and output of several
     applications in different windows of a graphical
     interface
• X uses a client/server architecture
   – X server
       • Controls the graphical screen
   – Client application
       • Uses the services of the X server to receive keyboard
         and mouse actions
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   Objective 1—Overview of the Linux
          Desktop (continued)
• Window managers are specialized client applications
   – Provide control elements
   – Manage virtual desktops
   – Provide functionality of window frames
• X Window System is not linked to any specific
  window manager
• Desktop environments go far beyond the look and
  feel window managers provide
   – For desktops and manipulating windows


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   Objective 1—Overview of the Linux
          Desktop (continued)




           Figure 2-1 X System client/server architecture

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        Objective 2—Use the GNOME
            Desktop Environment
• GNOME is a comfortable desktop environment
• To use the GNOME desktop environment, you need
  to know how to:
   –   Log In
   –   Log Out and Shut Down
   –   Identify GNOME Desktop Components
   –   Manage Icons in GNOME
   –   Use the GNOME File Manager (Nautilus)



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                           Log In
• When working with a multiuser-capable operating
  system
   – You must first identify yourself to the operating
     system using:
       • A login string or username
       • A password




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                 Log In (continued)




       Figure 2-2 SLED 10 login screen
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                 Log In (continued)




       Figure 2-3 GNOME desktop environment
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            Log Out and Shut Down

• Open the Computer menu (also called main menu)
   – Select the Logout entry
   – See Figures 2-4 and 2-5
• Back at the login screen, four options appear in the
  lower-left corner:
   –   Language
   –   Session
   –   Reboot
   –   Shut Down


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  Log Out and Shut Down (continued)




       Figure 2-4 SLED 10 Computer menu

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  Log Out and Shut Down (continued)




              Figure 2-5 Log out confirmation dialog




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  Log Out and Shut Down (continued)

• Shut down the computer directly from the GNOME
  desktop by selecting Shutdown
   – On the right side of the Computer menu
   – See Figures 2-4 and 2-6




SUSE Linux Enterprise Desktop Administration   13
  Log Out and Shut Down (continued)




                Figure 2-6 Shutdown confirmation dialog


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 Exercise 2-1: Log In to and Log Out of
         the GNOME Desktop
• In this exercise, log in to the GNOME desktop as
  user geeko (password novell); then, log out again
• Perform these tasks from the GUI login screen
  (where you were left after installing SUSE Linux
  Enterprise Desktop 10)




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Identify GNOME Desktop Components


       Main menu   Tomboy Notes                Additional icons




  Figure 2-7 GNOME desktop bottom panel




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Identify GNOME Desktop Components
            (continued)
• Additional icons include:
   –   Network Manager Icon
   –   Monitor
   –   Globe
   –   Battery
   –   Speaker
   –   Calendar
   –   Clock
   –   Board
• Most programs are started from the main menu
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Identify GNOME Desktop Components
            (continued)




      Figure 2-8 GNOME main menu

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           Manage Icons in GNOME

• Desktop
   – Create an icon for an application
       • Select the item in your application menu, drag it to a
         free space on your desktop, and release the mouse
         button
   – Create a new icon
       • Right-click a free space on your desktop
       • Options
          – Create Folder
          – Create Launcher
          – Create Document
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 Manage Icons in GNOME (continued)




                                           Figure 2-11 Create a new folder




   Figure 2-10 Create a new desktop icon




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 Manage Icons in GNOME (continued)




                                            Figure 2-13 Create a
                                            new document



   Figure 2-12 Create a new launcher icon



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 Manage Icons in GNOME (continued)

• Panel
   – You can add new programs to the bottom panel by
     right-clicking a free area of the panel
       • Then select Add to Panel
   – See Figure 2-14
   – Remove a program from the control panel by right-
     clicking its icon in the bottom panel
       • Then select Remove From Panel
   – Move icons in the panel by holding down the right
     mouse button
       • Selecting Move from the Context menu
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 Manage Icons in GNOME (continued)




              Figure 2-14 Add new programs to the bottom panel

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 Manage Icons in GNOME (continued)

• Main Menu
   – You can add icons to the list of favorite applications
     by doing the following:
       • Open the main menu in the panel
       • Select More Applications
       • Using the right mouse button, select an application item
         in the right frame
       • Select Add to Favorites from the pop-up menu




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     Exercise 2-2: Work with Icons in
                GNOME
• In this exercise, add a new launcher labeled xeyes
  (for the program /usr/X11R6/bin/xeyes) to your
  desktop
   – The icon for the new launcher should be
     gnomeeog.png
• Then, add the applet Geyes to your bottom panel
  and remove it again




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      Use the GNOME File Manager
               (Nautilus)
• You can start Nautilus by selecting the username’s
  Home icon on the desktop
   – Or by selecting Nautilus from the main menu
• Normally Nautilus shows the content of the user’s
  home directory after starting
• You can see your current position in the location bar
  below the toolbar
• All higher directories are shown as buttons


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      Use the GNOME File Manager
          (Nautilus) (continued)




            Figure 2-15 Nautilus

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   Exercise 2-3: Use the GNOME File
          Manager (Nautilus)
• In this exercise, you explore your GNOME desktop




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  Objective 3—Access the Command-
    Line Interface from the Desktop
• Virtual terminals
   – Allow you to work in Linux as if you have several
     classic serial terminals available at the same time
• You can have up to six virtual terminals (F1-F6)
  running on your computer
   – By pressing Ctrl+Alt+Fx, you can switch between
     individual terminals
   – By pressing Ctrl+Alt+F7, you can switch back to your
     graphical user interface
• When you switch to a virtual terminal, a login prompt
  appears
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  Objective 3—Access the Command-
    Line Interface from the Desktop
               (continued)
• You can start a terminal emulation from your
  GNOME desktop by selecting GNOME Terminal
   – Or X Terminal from the main menu
• The terminal opens inside a window
   – Includes menus that you can use to modify the display
     of the terminal
• You can also start a GNOME Terminal by right-
  clicking on the desktop background
   – Select Open Terminal

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  Objective 3—Access the Command-
    Line Interface from the Desktop
               (continued)




          Figure 2-18 GNOME Terminal window


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 Exercise 2-4: Access the Command-
            Line Interface
• In this exercise, log in as user geeko at the first
  virtual terminal
• Then, switch to the second virtual terminal and verify
  that a login prompt is shown there
• Before switching back to the graphical user
  interface, log out from the first virtual terminal




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                         Summary
• You can interact with a Linux system using a
  graphical or command-line interface
• The Linux graphical interface is provided by the X
  Window System
• The X server used by SUSE Linux is X.org, and it
  communicates with client applications using the
  TCP/IP protocol
• The default client application used by the X Window
  System in SUSE Linux is the Metacity window
  manager

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               Summary (continued)
• A desktop environment such as KDE or GNOME can
  be used in addition to a window manager to
  standardize the X Window System
• The Computer menu on the panel at the bottom of the
  GNOME desktop can be used to start applications,
  search for files, configure system settings, and shut
  down or hibernate the system
• You can obtain a command-line interface in SUSE
  Linux by interacting with one of six virtual terminals
• Switch from a command-line interface to a GUI
  interface using the Ctrl+Alt+F7 key combination
 SUSE Linux Enterprise Desktop Administration       34

								
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