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The Linux Command Line by William E. Shotts Jr.

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Final Note

In this chapter we learned an essential skill—editing configuration files with a text editor. Moving forward, as we read man pages for commands, take note of the environment variables that commands support. There may be a gem or two. In later chapters we will learn about shell functions, a powerful feature that you can also include in the bash startup files to add to your arsenal of custom commands.

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