Linux with Operating System Concepts

Chapter 7

Shell Scripting

This chapter’s learning objectives are

• To be able to write Bash shell scripts
• To know how to use variables and parameters in shell scripts
• To be able to write input and output statements in shell scripts
• To understand and write conditional statements in Bash
• To be able to properly apply selection statements in shell scripts
• To be able to properly apply loop statements in shell scripts
• To understand how to use arrays and string operations in Bash
• To understand the role of the function and be able to write and call functions in Bash
• To understand the differences between Bash and C-shell scripts

7.1 Introduction

Most computer programs are written in a high-level language (e.g., C++, Java) and then compiled into an ...