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Client / Server relationship
The x window system has to power to run a program on one computer and take I/O from another computer. The computer that runs the program is called the X client and the computer that uses the program is called the X server. Note: These terms are reversed from 'normal' networking terminology.
Common Window managers
Enlightenment - Used by GnomeKwm - Used by KDEOver 50 others
AnotherLevelCDEfvwmolwmmwmtwmGnome
Gnome (sometimes pronounced guh-nome)
Is a desktop environment that requires a window manager.
Gnome uses EnlightenmentThe GUI that we installed on the class
computers is gnome,With the standard Red Hat installation you
have a choice of gnome or KDE or both if you have sufficient hard disk space.
Starting X
From the text interface type startx <enter>It is best to use the GUI as a plain user
although it will allow you to come in as root. This will generate a warning message.
Gnome will display a picture and then a list of processed that it is starting. After a short wait you will see the main screen.
Review
You can set the system to automatically run the GUI by editing the /etc/inittab file. If you do this, it is hard to get back to the text interface. If you boot into text mode it is easy to go back and forth between text and GUI shells.
How It’s Done
Look for this line: id:3:initdefault in the /etc/inittab file
3 means boot to text shell 5 means boot to GUI Do NOT use any other value or you can trahs the
system! You can force the program to reread the
configuration file (and avoid the need to shutdown and restart manually) by typing init q <enter>
Windows - Components
A borderTitle barOptions buttonIconify button (like mminimize)Minimixe/Maximize Button (like
maximize/restore)Close ButtonScroll bar
Resizing
Click (single click) the help iconPractice resizing from all four sides and
cornersMove by dragging the title barShade (roll up the window) by double
clicking the title bar
The Panel
The foot is the main menuThe end arrows minimize the panel itselfStandard iconsHelpTerminal emulation
OpenTry commandsLeave open
The Panel
Tool Box Netscape Virtual Desktop selector
Switch to unused and open help Click on terminal quarter, unused and help
The File Manager
Notice the CDROM and floppy 0 icons on the desktop.
These may not appear automatically with all implementations
Click, foot, programs, file managerClick + and - signs at left.Similar to windows explorer
The File Manager
/dev /home and other directories will be here open the /mnt directory.
You should see cdrom and floppy
Gnome tries to automatically mount these devices
Open /homeYou will see all user account directories (but not
root)
Exercise - file management
Open a new virtual desktopOpen terminal emulationCreate test1 test2 text3 (touch test1 test2 test3)Switch to file manager desktopClick the rescan buttonGo to /home or /root (depending on how you
logged in)The files should appear
Exercise - file management
Right click test1 and click on copy to test4
The display will automatically rescanRight click test1 and deleteRight click test2 and move to test5
Multiple file operations
Switch to brief viewClick test3, Shift click test5Test3 test4 and test5 are selected. <Shift-
click> selects a range of files<CTRL-click> works too. It selects
multiple files
Some applicationsCalendar
footprint, programs, applications, calendarexplore it
SpreadsheetFootprint, programs, applications, GnumericGnumeric will read .xls files
Text editorFootprint, programs, applications, gedit
Emacs is also available
Configuring the desktop
Click on configuration tool iconThe "control center" appearsAt the top left is the desktop sectionCheck out the background and
screensaver areasIn screensaver is where you can set a
password to get back on
Adding applets to the panel
Right click on any empty part of panelApplets - monitorsCPU loadMEM loadDisk usage