UM-Flint CSC 377 - Unix Operating System (6 pages)

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Unix Operating System



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Unix Operating System

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Lecture Notes


Pages:
6
School:
University of Michigan-Flint
Course:
Csc 377 - Operating Systems

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Using the Unix Operating System The Unix operating system presents you with two different user interfaces a graphical user interface that looks similar to the Windows or Apple Macintosh interface and the non graphical user interface in which you type commands and are given typed responses to the commands This introduction is intended to give you a summary of some of the major points about using the non graphical user interface of the Unix machine The Unix operating system includes several hundred utility programs which are often referred to as commands These commands are issued when you type them They may have zero or more parameters to each command A parameter is a character string that you type after the command that will modify the actions of the command For example as the following command is written it has no zero parameters cd Another version of the same command takes a single parameter cd usr There are some conventions that are followed in Unix and this document follows some conventions as well Conventions include 1 Unix is case sensitive This means that upper case and lower case characters e g A vs a are different on Unix Therefore you must always type a command as it is written For example you cannot type CD when the command is cd 2 Unix commands often produce no output If a command is not normally one that is specifically used for displaying information to the screen then nothing happened usually means that it worked 3 When commands are written in this manual it is implied that you must type the Enter key after the command 4 If you see a command written with the character it means that you are to use the Ctrl key For example C means that you simultaneously press the Ctrl key and the C key 1 The tables below present commands and their descriptions as well as examples of each command The commands are organized according to several categories In the example portion what is written is what you would type at the prompt on Unix For example to read the manual



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