UNIX | Getting Started | Chapter – 1

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Getting Started              Chapter – 1

 This Chapter begins the tour of the UNIX universe. To understand unix, we’ll first have to know what an operating system is, why a computer needs one and how unix is vastly different from other operating system that came before – and after. Through a hands-on session, we’ll learn to play with UNIX system and acquire familiarity with some of its commands that are used every day for interacting with the system. The experience of the introductory session will help us understand the concepts presented in the next chapter.

UNIX had had a rather turbulent background. Knowing this background will help us understand the objectives that guided its development. Even though UNIX owes its origin to AT & T, contributions made by the academic community and industry have also led to the enrichment and fragmentation of UNIX. The emergence of a windowing (GUI) system, however, had often led users to adopt undesirable shortcut’s. For the initiated though, Linux offers a superior and cost-effective solution for the mastery of UNIX.

What you will learn

*      What an operating system is and how UNIX more than fulfils that role.

*      Know the location of the special characters on the keyboard.

*      Log in and out of a UNIX system using a username and password.

*      Run a few commands like date, who and cal.

*      View process with ps, and files with 1s.

*      Use a special character like the * to match multiple filenames.

*      The role of the shell in interpreting these special characters (metacharacters).

*      A brief background of UNIX and Linux.

*      How the internet contributed to the acceptance of UNIX?

Topics of Special Interest


*      Examination of the sequence of steps followed by the shell in executing the command 1s > list to save command output in a file.


*      A similar examination of the sequence 1s | wc to connect two commands to from a pipeline.

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