Introduction to Linux OS

• Overview of Linux OS and its characteristics
• Suitable for beginners with no prior knowledge

Difference between Linux and Unix

• Unix:

  • POSIX-based operating system
  • Follows the Portable Operating System Interface (POSIX) standard
  • Examples include various Unix-like systems

• Linux:

  • Refers to any OS using the Linux kernel
  • Part of the Unix family

Advantages of Linux

• Open Source:
  • Code can be inspected and corrected by many users
• Distribution Variety:
  • Different distributions available (e.g., Debian, Ubuntu, Red Hat)
• Compatibility:
  • High compatibility with Unix and multi-user OS
• Portability and Scalability:
  • Most parts written in C; assembly only needs recreation for different systems

Disadvantages of Linux

• Lack of Technical Support:
  • Most applications are non-commercial; individual support is scarce
• Learning Curve:
  • Harder to master compared to Windows
  • Requires skills in command line interface (CLI)
• Compatibility Issues:
  • Windows programs do not run on Linux

Why Use Linux?

• Applications:
  • Widely used in embedded devices
  • Common in critical areas (e.g., Android, web servers)
• Performance:
  • High speed and portability due to the C environment

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These notes summarize the key points from the lecture on Linux OS, including its characteristics, advantages, disadvantages, and usage.