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Harley Hahn's Guide to
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A Personal Note
Chapters...
Command
INSTRUCTOR |
Exercises and Answers for Chapter 1... Introduction to Unix Review Question #1: When was the first Unix system developed? Where was the work done? Answer The first Unix system was developed at AT&T Bell Labs in New Jersey (U.S.). Review Question #2: What are four important reasons to learn Unix? Answer • You have a lot of control over your work environment. • Using Unix will change how you think for the better. • You will have access to a huge number of useful, interesting and important tools. • Unix is very reliable and stable. • Unix provides a powerful, sophisticated environment in which to write programs. • You can participate in the global Unix community. Review Question #3: What is the origin of the name "Unix"? Answer The first Unix system was developed by Ken Thompson of Bell Labs, who had previously worked on a large, unwieldy, multiuser operating system named Multics. Thompson's operating system was smaller, less ambitious and (at first) used by only one person at a time. He coined the named Unics as a contrast to Multics. Soon afterwards, the name was changed to Unix. For Further Thought #1: Prior to 2001, the operating system used by Apple for Macintosh desktop computers was completely proprietary. In 2001, Apple introduced a new operating system (OS X) based on Unix. What are three advantages to changing to a Unix-based operating system? What are three disadvantages? Answer Advantages: • A huge amount of existing Unix software can be made to run on Macintoshes. • Attracts very smart users who otherwise would not use an Apple, as they want a native Unix environment. • Relieves Apple of the burden of creating and maintaining a 100% proprietary operating system. • In many important ways, Unix is superior to the old operating system. Disadvantages: • Need to rewrite/convert existing programs to the new system. • Need to retrain users and programmers. • Working environment is not completely controlled by Apple any longer. Exercises: Introduction | Chapter list
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