Explanatory Note

Quick Guide to Command Line Basics

Before graphical user interfaces (GUI), drag and drop desktops, and voice activated assistances (e.g., Siri), the only way to interact with a computer was through written commands using the command line interface (CLI).

Internal Rate of Return

Time Value of Money The internal rate of return (IRR) is simply the rate r that equates the future value of money to the present value. Despite being a foundational tool in financial analysis, the economic interpretation of this value is highly contested.

macOS Package Management

This is the first in a series of articles about package managers for various programs. Packages are optional plugins that provide some extra functionality to a program you use. They are often free and open source software (FOSS) made by individuals or consortiums.