Linux.com: CLI Magic: Customizing Your bash Environment

“An environment is a collection of concepts that express the
things a computer system does in terms designed to be
understandable and coherent, and a look and feel that is
comfortable. Unix shells present you with such concepts as files,
directories, and standard input and output, while Unix itself gives
you tools to work with these, such as file manipulation commands,
text editors, and print queues. There are also more sophisticated
ways of customizing your shell environment…”

Complete
Story