A System V Guide to UNIX and XENIX by Douglas W. Topham

By Douglas W. Topham

A procedure V consultant to UNIX and XENIX takes the amateur reader during the positive factors of the UNIX procedure step by step with no jargon and assumptions in regards to the reader's technical wisdom present in related books. With its transparent reasons, a variety of examles, and easy association, this booklet appeals to many non-technical humans simply commencing to paintings with UNIX, in addition to engineers and programmers with past adventure. somebody who reads this e-book will how you can use the beneficial properties of UNIX, and the way to change and customise these gains. it's prepared in one of these manner that it leads the reader from the UNIX fundamentals to the extra advanced and robust innovations equivalent to shell-programming and networking. even though the publication is written as creation and reference for the UNIX consumer, it may rather well be used as a textbook in undergraduate computing device technological know-how or laptop engineering courses.

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So before you can begin using UNIX, you have to make sure that UNIX recognizes you as a user on the system and that it can communicate with the terminal you are using. IDENTIFYING YOURSELF TO UNIX You will be able to use UNIX only after your name has been added to a list of users. If you are working in a company or an institution, there is probably a system administrator designated to take care of new users. If so, this administrator will assign you an identifier, a password, and a terminal. The identifier assigned to you (also known as an account name, login name, or user name) will probably be either one of your names or your initials.

Later on, after you become more familiar with UNIX, you can learn to use a command called stty (set teletype) to make adjustments (see Chapter 33). 2 Logging in and logging out LOGGING IN Once you have an identifier, a password, and a working terminal, you are ready to log in. Logging in is what gives you access to the UNIX operating system. Let's go through the basic procedures (which may vary from one system to another) shown here. 1. Establish connection between the computer and your terminal.

But as this example shows, you always have the option in UNIX of splitting a long line of input. By entering be -I at the command line instead of be, you can also invoke a mathematicallibrary, which includes sine (s), eosine (c), arctangent (a), exponential (e), naturallogarithm (1), and Bessel (j (n, x) ) functions. By entering be file(s) instead of be, you can have be read statements from one or more files before accepting keyboard input. This allows you to store longer functions in files instead of having to type them over again every time you want to use them.

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