🐧 Operating Systems Lab Manual

A Complete Guide to OS Implementation in C

Master the core concepts of Operating Systems through hands-on C implementations. This repository covers scheduling, memory management, file systems, and more.

Experiments • How to Run • Structure • Author

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📚 Course Details

• Subject Code: U21CS404
• Course: Operating Systems Lab
• Language: C (POSIX Compliant)
• Environment: GCC on Linux / MacOS / WSL

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🧪 Experiments

No.	Experiment Title	Description	Key Concept
01	UNIX Basics	Basics of UNIX commands & shell editors.	Linux-CLI, Shell
02	System Calls	Process and file-related system calls.	fork, exec, open
03	CPU Scheduling	FCFS, SJF, SRTF, Priority, & Round Robin.	Scheduling, Throughput
04	IPC (Communication)	Pipes and Shared Memory implementations.	Pipes, Shared Memory
05	Producer–Consumer	Solve synchronization using semaphores.	Mutex, Semaphores
06	Banker's Algorithm	Deadlock avoidance using resource logic.	Deadlock, Safe Sequence
07	Page Replacement	FIFO, Optimal, and LRU algorithms.	Memory, Page Faults
08	Disk Scheduling	FCFS, SSTF, SCAN, and C-SCAN.	I/O Performance
09	File Organization	Sequential, Random, and Serial storage.	File Systems
10	File Allocation	Sequential, Indexed, and Linked.	Allocation Strategies

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⚙️ How to Compile and Run

Standard GCC tools are used for all experiments.

Clone the Repo

git clone https://github.com/ha-re-ram/OS-Lab.git
cd OS-Lab

Compile & Execute

# Example: Running the FCFS scheduler
cd Experiment-03-CPU-Scheduling
gcc 03a-fcfs.c -o fcfs
./fcfs

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🗂️ Project Structure

OS-Lab/
├── Experiment-01-Basics-of-UNIX/
├── Experiment-02-System-Calls/
├── Experiment-03-CPU-Scheduling/
├── Experiment-04-IPC/
├── Experiment-05-Producer-Consumer/
├── Experiment-06-Bankers-Algorithm/
├── Experiment-07-Page-Replacement/
├── Experiment-08-Disk-Scheduling/
├── Experiment-09-File-Organization/
├── Experiment-10-File-Allocation/
├── assets/                          # Project media & banners
├── docs/                            # Documentation & Manuals
├── LICENSE                          # MIT Rights
└── README.md                        # Documentation

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🧑‍🎓 Author

Hareram Kushwaha CSE Student at KPRIET

"Exploring the foundation of computing, one system call at a time."

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📜 License

Distributed under the MIT License. See LICENSE for more information.

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