Microkernel architecture, Linux operating system, minimalist design, modular structure, Unix-like, open-source, collaborative development, command-line interface, terminal window, coding, programming, C language, script, shell, kernel space, user space, process management, memory management, file system, network stack, device driver, system call, API, abstraction layer, hardware virtualization, software framework, scalable, flexible, secure, reliable, portable, multi-user, multi-tasking, command prompt, terminal emulator, Linux mascot Tux, penguin character, coding environment, developer workspace, computer screen, keyboard, mouse, desk, office.