Overview

UNIX is one of the oldest and most influential operating systems in the history of computing. From large-scale servers to modern Linux distributions, its philosophy and design have impacted virtually every facet of the technology world. ""UNIX Unleashed: A Practical Guide for Programming and Shell Scripting"" is designed to equip undergraduate and postgraduate students with a solid understanding of the UNIX operating system, its file structures, essential commands, process management, shell scripting, and C programming in the UNIX environment. The book follows a practical and example-driven approach that starts from the very basics and builds up to more advanced concepts such as system calls, inter-process communication, and shell script automation. It is intended not only for students pursuing computer science and related courses but also for aspiring system administrators, programmers, and software developers who wish to gain hands-on proficiency in UNIX systems. This book serves as a one-stop resource to learn and master UNIX programming, enabling students to bridge the gap between theoretical concepts and real-world implementation. The inclusion of exercises, lab assignments, and mini-projects further enhances the practical learning experience.Objective of the Book To introduce students to the UNIX operating system and its architecture. To familiarize them with essential UNIX commands and utilities. To teach shell scripting with a focus on automating routine tasks. To demonstrate file handling and process management in C. To prepare students for industry-level problem-solving using UNIX systems. Key Features Comprehensive coverage of UNIX commands and tools. Step-by-step guidance for writing shell scripts. Deep dive into C programming in UNIX environments. Real-world examples and case studies. Exercises, practice questions, and lab experiments for each chapter. Suitable for self-study and academic coursework. Who Should Read This Book? Students pursuing BCA, MCA, BTech (CS/IT), or related programs. Faculty members looking for a textbook or reference material. Programmers and IT professionals new to UNIX. System administrators and developers working in a UNIX/Linux environment. Anyone interested in learning the internals of operating systems. Benefits of Studying This Book1. Foundational Knowledge of UNIX: Students will understand the foundational principles behind one of the most powerful and reliable operating systems ever developed. This knowledge is critical in understanding Linux, macOS, Android, and other UNIX-like systems. 2. Enhanced Command Line Proficiency: By studying this book, students will become proficient in using the UNIX terminal, mastering a variety of commands to interact with the system efficiently. This includes handling files, directories, processes, and text data using powerful command-line utilities. 3. Mastery in Shell Scripting: Shell scripting is essential for automating tasks, writing complex command sequences, and system administration. Students will learn how to write clean, efficient, and portable shell scripts using constructs like loops, conditions, and functions. 4. Understanding of Process Management: A deep understanding of how processes work in UNIX, how they are created, and how they communicate is critical for both programming and administration. This book demystifies concepts like foreground/background jobs, process trees, zombie and orphan processes, and process synchronization. 5. Hands-on C Programming with UNIX System Calls: Beyond scripting, students will explore UNIX from a developer's point of view-using system calls to perform low-level file operations, manage processes.

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