All you need to know about Unix environment variables
Environment variables on Unix systems -- how to understand, modify, and appreciate them
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Tutorials
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Health tips for Unix systems
Things to watch and tools to use to make sure your Unix/Linux systems maintain their health and vigor
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Saving time by repeating history
clever use of history commands to help you move faster on the command line
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Making your command line more helpful and fun!
You can do a lot more with your command line font colors than turn them on and off. How about picking your own colors? How about customizing your prompt so that it balks when you make a mistake?
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The artistry of top
The top command's many options allow you to be creative when you're looking into system performance
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Having your way with rsync
With the right group of options, you can get rsync to do just what you want and nothing more