Like the Windows operating system, Linux also provides keyboard shortcuts for most commands, allowing users to simply press two or more keys on the keyboard at same time instead of typing the exact spelling of the original word to issue a command. These shortcuts are a very convenient and fast way to perform various Linux commands.

To become a Linux power user, you must also know how to set up Linux environment variables in addition to knowing as many keyboard shortcuts as possible. Properly setting up these environment variables can facilitate many tasks in Linux, including configuring the look and feel of the shell, creating environment variables as needed by programs, setting the search path, setting the commands that you want to run whenever you log in or out, and so on.

Answer the following questions:

• In your opinion, which keyboard shortcuts will be most useful? Why?
• You need to set an environment variable to hold a printer that will be used by all of the processes in your terminal. What Linux commands will you need to make this happen?