Information technology (IT) is the use of any computers, storage, networking, and other physical devices, infrastructure and processes to create, process, store, secure and exchange all forms of electronic data.

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While using a Linux system, you'll be typing commands repeatedly or copying them from somewhere. This's a big productivity killer and will distract you from what you're actually doing.

You can save yourself some time by creating aliases for your most-used commands. Aliases are like custom shortcuts used to represent a command (or set of commands) executed with or without custom options. Chances are you are already using aliases on your Linux system.