ENVIRONMENT VARIABLES ARE A LEGACY MESS: LET'S DIVE DEEP INTO THEM

Summary from the TLDR newsletter

Programming languages have evolved rapidly in recent years, making environment variables obsolete. While environment variables allow users to pass ad-hoc variables at runtime, they are awkward to use, and the interface is outdated. They have no namespaces or types, just a flat global dictionary of strings. This post looks at how environment variables work.