Operating Systems – Course Tasks

This repository contains exercises in C, Java, and shell scripting for OS concepts.

• Task 1: Modify file names (lower/upper/sed) with modify script and test with modify_examples.
• Task 2: The program creates multiple child processes, handles signals like SIGINT and SIGTERM, and demonstrates how a parent can manage its children safely.
• Task 4: Virtual Memory Simulator (Java) – run java MemoryManagement commands memory.conf to map pages and track page faults.
• Task 5: Dining Philosophers (C, Shared Memory): Fork-based processes synchronized with semaphores; handles SIGINT.
• Task 6: Copy files using read/write or mmap (copy [-m] <src> <dest>), with getopt() for options.
• Task 7: Dining Philosophers (C, Pthreads): Thread-based simulation with mutexes; philosophers think/eat for 40s.