Materials

Lecture 1

  • The purpose of operating systems
    • Abstract the hardware (for high level interfaces and abstractions for software to use)
    • Multiplexing (for multiple applications to share hardware, isolation i.e. bugs and security and share to allow cooperation)
  • OS abstractions
    • process (a running program)
    • memory allocation
    • file descriptors
    • file names and directories
    • access control and quotas
    • Many others ……
  • What are system calls
    • a interface between user and kernel

Lecture 3

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