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Linux Professional Institute

Course

( LPI-Level 1)

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Chapter 1

Introduction

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Objectives

Answer the question : Why Linux ?

List some of the key companies using Linux today

Describe the Value Proposition associated with

Linux

Identify the conventions used throughout the

courseware

Identify the conventions used throughout the course

labs

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Why Linux ? (becomes popularly)

Linux is a source opened operating system (OS) with all thefeatures of other OSs

Its a very stable, quality, flexible OS being continually

developed by hundreds of thousands of independentprogrammers from around the world

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Companies using Linuxtoday

IBM

HP

Cisco

Sun Microsystems

Hitachi

Fujitsu

Sony

Amazon.com

Google

and many more

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Whatcanthe Linuxdo ?

Linux is extremely valuable and is used in many ways. Its

deployed as a server, development or workstation with

emerging technologies :

Web Hosting

Softwares Development

File and Print services

Document Publishing

E-mail Servers

Database Servers

Network Routers And a host of otherworkstation applications,

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OtherConsiderations

Fragmentation

High cost

Vendor Dominance ?

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The Value Proposition

Reliability

Scalability

Security

ROI (Return On Investment) TCO (Total Cost ofOwnership)

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Reliability

You can easily manage the necessary workloads in todays

business environment

Linux machine can do as FTP server, Web server, Mail

server, DHCP server, DNS server, and run smoothly You do NOT need to rebootmachine after installing new

softwares or services

Linux machine has never been halted

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Scalability

The release of the 2.4 kernel can handle large business

workloads that once could only be addressed by closed,

proprietary platforms and solutions

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Security

The open source model allows for expert auditing and

self policing of code prior to release

When problems are found, fixes are developed and tested

by the group of worldwide programmers Viruses are almost non-existent on Linux

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ROI (Return OnInvestment)

The open source licensing model allows for no per unit fees

or licensing charges. This will significantly reduce IT

infrastructure expense when companies look to perform

company-wide software migrations and enable legacy

system integration

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TCO (TotalCostof Ownership)

Each Linux administrator can maintain a large number of

servers and clients. This reduces the total cost of ownership of

Linux versus Windows, Netware and other PC platforms

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Course Format

Structure : consist both LAB exercises and lecture

information.

Objectives : specify whatwhat students will achieve or able to

demonstrate as a result of our material.

Conventions : used to communicate different teaching points,

concepts and student interaction

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Conventions

All URLs are italicized

http://www.saigonlab.com

Command line (input) examples and computer output or

text contained in sample files are in Courier New font Keyboard keys we want you to use will look like this : Esc,

Backspace, Enter(Return),

Place holder for parameters will indicated by : < insert

parametershere >

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Introductionto LABs

Hands-on learning is an important part of knowledge

retention. Take your time and internalize process you

perform to complete particular task. Practice is important to

true understandingof the task at hand

Please read the questions and exercises carefully before

beginning (see AppendixA)

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LAB Conventions

When youre asked to enter a command, it will be written inthe form :

# command

Command may also be written in the form:# command # comment

# comment describes action or meaningof the command,

NOT a part of command

Control keys are shown by caret symbol and the required

leter. For example: ^C = Control + C

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Summary

Answer the question : Why Linux ?

List some of the key companies using Linux today

Describe the Value Proposition associated with Linux

Identify the conventions used throughout the courseware Identify the conventions used throughout the course labs