lec20- Linux Semaphores Explained | IPC Using Semaphores in Linux System Programming (POSIX & SysV)

In this video, you will learn semaphores in Linux, inter process communication (IPC) using POSIX and System V semaphores, with real C programming examples for Linux system programming.

This Linux semaphore tutorial explains binary semaphore, counting semaphore, semaphore vs mutex, and process synchronization in Linux using sem_init, sem_wait, sem_post, sem_open, semget, semop, and semctl.

Semaphores are a core IPC mechanism in Linux system programming and are widely used in process synchronization, multithreading, device drivers, and operating systems.

In this lecture, you will understand:

What is a semaphore in Linux

Why semaphores are used for inter process communication

Difference between binary semaphore and counting semaphore

POSIX semaphores vs System V semaphores

How sem_init, sem_wait, sem_post work internally

How semget, semop, semctl work in System V IPC

Producer consumer problem using semaphore

Critical section, race condition, deadlock, and starvation

Difference between semaphore vs mutex vs spinlock

Semaphore programming in C on Linux

Semaphore interview questions and real-world examples

This tutorial is part of Linux system programming and is extremely useful for:

Embedded Linux developers

Linux device driver developers

Operating system students

Interview preparation for Linux IPC

Beginners learning Linux IPC mechanisms

You will also see hands-on semaphore examples in C, understand process vs thread synchronization, and learn how semaphores are used inside the Linux kernel and device drivers.

🔹 Who This Video Is For

✔ Linux system programming beginners
✔ Embedded systems engineers
✔ Linux IPC learners
✔ OS and kernel learners
✔ Interview and exam preparation