Section 1: Linux Basics and SLES9 Installation

Objective 1 The History of Linux

The Historical Development of UNIX Most computers at the end of the 1960's were designed for batch jobs Batch processing was highly inefficient Multics was one of the first systems to allow multiple simultaneous users to be logged on Unix was created soon thereafter (1969) as an upgrade to Multics First version written in Assembler Next version written in C in 1971 UNIX code was distributed freely to Universities and become increasingly popular

The Historical Development of UNIX (2) Several UNIX derivatives were developed IBM HP UX HP 1982 BSD Unix Developed by University of California Berkeley 1978 Unix System V AT & T Became Unix Standard

The Historical Development of UNIX (3) All Modern Unix System are either considered System V or BSD

The Development of Linux Spring 1991 Linus Torvalds created his own Linux Kernel in C Linus Torvalds made the source code of his Linux kernel available with a GPL GPL allows anyone to read and edit source code Requires all edited code to be made public Linux Kernel Functions Input and Output control Device Control Process Management File Management System Components Shell Utilities Network programs Non-Intel Kernel implementations

The Development of Linux (2) Supported hardware platforms i386: 32bit Intel/A MD PowerPC SPARC (Sun) IBM pSeries IBM zSeries Embedded

Objective 2 Understanding the Multi User Environment

Objective 3 Identify the Components of SLES 9 Updated Core System with Latest Versions New and Improved YAST Modules Next Generation Linux Kernel 2.6.5 Improved High Availability Support Full Enablement and Support of UTF-8 Inclusion of Red Carpet Enterprise Daemon New Type of Installation Source: SLP POSIX-Compliant, High Performance Threads Support (NPTL)

Objective 4 Perform Simple Installation of SLES 9 Pre-Installation Requirements and Guidelines Installation Options Basic Installation Manual Software Selection Configuration

Objective 5 Documentation, Installation and Baseline System Performance Document Installations and Maintenance Document Configuration Changes Document System Baseline Performance

Summary Linux is an advanced multiuser and multitasking OS developed by Linus Torvalds Can run on nearly any hardware platform Based on the UNIX OS UNIX was developed by Ken Thompson and Dennis Ritchie Linux source code is protected under the GNU Public License (GPL) which allows it to be publicly developed and distributed There are many different distributions of the Linux OS. One of the most prominent distributions is SUES Linux SUSE Linux Professional contains approximately 3500 packages SUSE Linux Enterprise Server (SLES) contains a fully supported subset of packages included SLES distributions have a general life cycle of approximately 5 years

Summary (2) Before installing any version of Linux you should ensure that your system meets the minimum requirements SLES distributions have more support for Server - class computers than for laptops The SLES installation process involves: Selecting a language Choosing software packages Selecting a hard disk partitioning scheme Providing a root user password Selecting a network Selecting services Creating Additional users Selecting Device settings

Summary (3) For future use in troubleshooting and maintenance you should document the following information about your Linux system Hardware specs Installed software Configuration settings Baseline Performance