Computer Components - Unix Systems - Lecture Slides, Slides of Advanced Operating Systems

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Chapter 1: Introduction to

Linux

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Introduction

• Computer Components:
  • Hardware
  • Software
• Types of hardware and software
• Important components of an OS are:
  • User Interface
  • Device drivers
• What is the function of an OS?

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OS (cont.)

• OS also provides GUI and system services such as Network access and Print & File services.

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The Linux OS

• Still, what is the main function?

Managing resources

• Resources include (processors, MM, I/O, users, etc.)
• Some operating systems are multitasking multiuser ones!
• What is Linux? How do you pronounce it?
• Almost all Linux versions have a common core component called the Kernel

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Linux Versions

• Major, minor, & revision numbers
• Minor (odd development & even production)

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Types of S/W licenses

• GPL: Source code must be freely available
• Artistic license: OSS that allow source code to be changed only at author discretion

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More History

• Unix is the first multitasking, multiuser OS
• What happened to Unix?
• Current versions (Solaris, HP-UX, IBM’s AIX, etc.)

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More on Linux

• Famous distributions (Red Hat, SuSE, etc.)
• GUI Components
  • X-Windows
  • Window manager
  • Desktop environment (KDE & GNOME)
• Common uses:
  • Servers
  • Workstations (Scientific/Engineering and office applications)