🎓 Operating Systems Lab Assignments

This repository contains my solutions to a series of lab assignments for an Operating Systems course. The labs cover fundamental concepts of process and memory management, inter-process communication (IPC), and file systems, providing hands-on experience with low-level system programming.

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📋 Topics Covered

• LA1: Multi-process applications (fork, wait, exec) — Process creation and management.
• LA2: IPC using signals — Inter-process communication with signals.
• LA3: Scheduling Algo Simulation — Analyze efficiency of CPU scheduling algorithms.
• LA4: IPC using pipes and dup — Implement IPC using pipes & file descriptor duplication.
• LA5: IPC using shared memory — Use shared memory for fast and efficient IPC.
• LA6: IPC with shared memory + semaphores — Combine SM with semaphores for thread-safe synchronization.
• LA7: Multi-threading with pthreads — Develop multi-threaded program using the pthread
• LA8: Deadlock in multi-threaded apps — Handle deadlock conditions in concurrent programs.
• LA9: Demand paging (no replacement) — Simulate a demand paging system without a page replacement algorithm.
• LA10: Demand paging (with replacement) — Extend the simulation to include a page replacement algorithm.
• LA11: File system interface — Work with the user-level interface of a file system.

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🛠️ Languages & Tools

This project primarily uses the C/C++ programming languages and relies heavily on a UNIX/Linux environment. Key system calls and libraries used include:

• Process Management: fork(), exec(), wait()
• IPC: pipe(), dup(), shmget(), shmat(), semget(), semop(), signal()
• Threading: pthread_create(), pthread_join()

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🚀 Clone Instructions

To get a copy of the repository, follow these steps.

1. Clone the repository:

   git clone [https://github.com/your-username/your-repo-name.git](https://github.com/your-username/your-repo-name.git)

2. Navigate to the project directory:

   cd your-repo-name

3. Explore the lab directories: Each lab assignment is contained within its own folder (e.g., LA1).

   ls

4. To compile and run a specific assignment:

   # Example for LA1
   cd LA1
   gcc -o gendep gendep.c
   ./gendep

   Note: Some assignments, like those involving threads, will require linking the -pthread library during compilation.