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Operating Systems · Module 10 of 10

OS in practice and interviews

Apply OS concepts in real systems and exams.

📖 Key ideas

  1. Use Linux commands to observe processes and memory: ps, top, free, vmstat.
  2. Mobile OSes manage battery, permissions and background tasks.
  3. Cloud servers rely on OS tuning and containers.
  4. Common interview topics: process vs thread, deadlock, paging, scheduling.
  5. Practise numericals: scheduling and page replacement.
💡 Real-life example: OS concepts are the traffic rules behind every app you use daily.
psLists processes
topLive process monitor
freeShows memory usage
vmstatVirtual memory statistics