/usr

The /usr directory in a computer's file system is where many of the installed programs, tools, and files used by the user are stored. It stands for "Unix System Resources" and contains essential software, libraries, and documentation that help the operating system and applications run smoothly. Think of it as a organized library containing the main resources and tools needed for your computer's software to function correctly. This directory helps keep programs and their supporting files separate from other system files, making maintenance and updates easier.