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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

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The Historical Development of UNIX (2)Several UNIX derivatives were developed

IBMHP UX

HP 1982

BSD Unix Developed by University of California Berkeley 1978

Unix System V AT & T Became Unix Standard

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

System V or BSD

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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

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The Development of Linux (2)

Supported hardware platformsi386: 32bitIntel/A MDPowerPCSPARC (Sun)IBM pSeriesIBM zSeriesEmbedded

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Objective 3 Identify the Components of SLES 9Updated Core System with Latest VersionsNew and Improved YAST ModulesNext Generation Linux Kernel 2.6.5Improved High Availability SupportFull Enablement and Support of UTF-8Inclusion of Red Carpet Enterprise DaemonNew Type of Installation Source: SLPPOSIX-Compliant, High Performance Threads

Support (NPTL)

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Objective 4 Perform Simple Installation of SLES 9Pre-Installation Requirements and GuidelinesInstallation OptionsBasic InstallationManual Software SelectionConfiguration

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Objective 5 Documentation, Installation and Baseline System PerformanceDocument Installations and MaintenanceDocument Configuration ChangesDocument System Baseline Performance

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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

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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

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Summary (3)

For future use in troubleshooting and maintenance you should document the following information about your Linux systemHardware specsInstalled softwareConfiguration settingsBaseline Performance

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