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SAMS Teach Yourself Unix in 10 Minutes by Robert Shimonski

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Summary

In this lesson, we looked at how to modify your user environment and what is needed to customize it. Although we skimmed only the surface, you should feel comfortable enough to make some configuration changes on your system. You are also advised to practice these on a system where harmful changes won't cause too much of a problem. Use a lab whenever you can.

The following was covered in this lesson:

  • Environment variables are always uppercase, and preceded by $. This is how they are identified as variables.

  • Environment variables are frequently used for specifying single configuration options to a program, such as providing a pointer to a directory that the program needs.

  • The $PATH variable keeps track of where the system searches for commands ...

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