Linux+ Guide to Linux Certification

ObjectivesUnderstand the purpose of the superuser accountOutline the key features of the Linux desktopsNavigate through the menusGetting helpUsing Virtual Consoles1CIS 105Chapter 4Introduction to Fedora and Red Hat Linux

Click the speaker for audio1Two different types of programs are executed on a computer:ApplicationsOperating system (OS) softwareUser Interface: An application program that allows the user to interact with the OS and other application programsGUITerminal

2Operating Systems

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3Operating Systems (continued)Figure 1-1: The role of operating system softwareGraphical user interface (GUI): Component of an OS that provides a user-friendly interfaceSystem services: Applications that handle system-related tasksPrintingScheduling programsNetwork access4Operating Systems (continued)

5Operating Systems (continued)A Linux graphical user interface

OS used to run a variety of applications on a variety of different hardwareHas the ability to manage thousands of tasks at the same time Allows multiple users to access the system simultaneouslyMultiuser and multitasking OS6The Linux Operating System

There is one administrative account that has all power. It is called rootThis account can make changes to the operating system file system, install and upgrade softwareThis account can also delete and change critical system files which can potentially disable the systemLinux is literal, and usually results are immediateUse the root account with care!You can access root privileges without being logged in a sthe root account by running the command at a terminal prompt su If you attempt to make changes to system services and configuration when using the Graphical User Interface, you will be challenged for the password for the user root. 7Keeping SuperUser under control

7We will rarely be looking at the Linux desktop during this courseThe textbook examples use the Desktop manager KDE, so I will use the GNOME desktop in my examples. 8The Linux DesktopClick the link below for a short tutorial on the GNOME desktop

Desktop Tour Tutorial

This will open a web browser and begin a demonstration.9Gnome Desktop TourLinux documentation can be found on the InternetFrequently Asked Questions (FAQs)HOWTO documentsLinux NewsgroupsLinux User Group (LUG): Open forum of Linux users who discuss and assist each other in using and modifying the Linux OS10Linux Advantages: Ease of Obtaining Support

Using Info Using manUsing --?Both of these are described in the tutorial at http://faculty.skagit.edu/imageuploads/repository161.mov 11Getting help at the terminal promptWorkstation services: Replacing the Windows and Mac computer with the FREE operating system. Server services: Linux can be found hosting many web servers, DNS servers and other server functions. Google using Linux to run their search engine.12Additional info:Common Uses of Linux