Operating Systems (OS) Learning Path (1 Month)

Week 1: OS Fundamentals & Architecture

• Introduction to Operating Systems: purpose and functions
• Types of Operating Systems (batch, time-sharing, distributed, real-time)
• OS structure and components
• System calls and OS services
• Process concept: process states, PCB, context switching

Week 2: Process Management & Concurrency

• CPU scheduling and scheduling algorithms (FCFS, SJF, Round Robin, Priority)
• Multithreading and thread management
• Process synchronization and critical section problem
• Synchronization mechanisms: semaphores, mutex, monitors
• Classic synchronization problems (Dining Philosophers, Readers-Writers)

Week 3: Deadlocks & Memory Management

• Deadlock: conditions, prevention, avoidance, detection, and recovery
• Memory management basics: contiguous, paging, segmentation
• Virtual memory and demand paging
• Page replacement algorithms (FIFO, LRU, Optimal)
• Thrashing and working set model

Week 4: File Systems & I/O Management

• File system concepts: files, directories, attributes, and access
• File allocation methods (contiguous, linked, indexed)
• Directory structures and mounting
• Disk scheduling algorithms (FCFS, SSTF, SCAN, C-SCAN)
• Protection, security, and introduction to distributed systems