How to Execute a File in a MacBook Terminal. The operating system your MacBook runs, OS X, is built on top of UNIX, and Terminal provides you with access to the underlying UNIX system commands.

While you can manually enter the commands to edit files in Terminal editors, in OS X you can set up a service to open files in a desired terminal editor from the Finder's contextual menu.

Linux: Why clutter up your desktop with separate terminal windows for every task? Learn to love GNU Screen, the terminal multiplexer, which essentially adds "tabs" to your terminal window. Here's how ...