Bash is not installed by default, but is available in the Shells section of the ports collection. Before we can customize the prompt, we need to know what a shell variable is. Variables allow you to change or vary their value, hence their name. Variables can be stored in a file that is read by the shell when you log in or change shells. Since we'll be mucking about with shell variables, let's create a test user account to try out our changes.
Aliases are simply abbreviations for commands.
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