Aug 22

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Introduction to UNIX

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• Unix®
• a portable, multi-user, multi-tasking operating system
  
• The Unix® philosophy
• programs that do one thing and do it well
• programs that work together
• programs to handle text streams, because that is a universal interface
• Why learn UNIX? - my personal reasons
• "It will make you a better computer scientist"
• "It is a building block for learning other CS concepts"
• "It is open source and stable."

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About CS 2204

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• A walk through the first day's handout

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Flavors of UNIX

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• Take a look at this wikipedia entry for history and evolution.

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Architecture of UNIX systems

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• kernel - does low-level functions, controls hardware.
• shell - accepts user commands and executes them.
• application programs and utilities - the highest level at which users interact with UNIX.
  • In cs2204, we will primarily cover application programs and the use of the shell. To bore deeper into UNIX programming, you should take a course such as cs3204.