It is an OS that allows users to interact directly with a computer. It is known for its multitasking capabilities.
Portable Operating System Interface is a collection of guidelines for maintaining OS compatibility.
Unix systems follow various standards. POSIX ensures compatibility across different Unix-like systems.
Unix – Multi-user capabilities – Multitasking – Hierarchical file system – Shell scripting
POSIX – Standardized APIs – Shell and utilities – Thread management – File system operations
Unix systems vary, including Linux, BSD, and others. POSIX compliance is sought in various OS to ensure standard functionality.
Unix has evolved into many variants. POSIX standards continue to adapt, ensuring modern system compatibility.