You probably will never stop fine-tuning your development environment, given the number of tools and scripts at your disposal, courtesy of the Web. Perhaps you're familiar with the GitHub community that collects and discusses dotfiles (http://dotfiles.github.com/), which include resources to accomplish common developer tasks using the command line. The command-line tool and your preferred text editor are the building blocks of your development workflow, so it's only natural that you invest some time to find solutions to your most common tasks that suit your needs.
One of most common tasks you perform when working with the command-line tool is to change directories in order to move files, execute scripts, and so on. Usually you perform this task using the $ cd command, followed by entering a path, and accessing help by pressing the Tab key.
You already discovered how powerful Node.js can be and how it's easy...