↩ 🔵 🔵 🔵 ❪✺ᵢ❫ Operating System Concepts ○ ❪✺₁❫ Computer Classes ○ Operating System ○꠹ ❪✺₁₀❫ Operating System Classes ○ Command-Line Interface (CLI) ○꠹ Directory ○꠹ Driver ○꠹ File System ○꠹ Fork ○꠹ Graphical User Interface (GUI) ○꠹ Kernel ○꠹ꟲᴼᴹᴾ Process ○꠹ Shell ○꠹ Symbolic Link ○꠹ System Call ○꠹ Thread ○꠹ Windowing System ○꠹