UNIX Shell Programming

Course Length: 3 Days

Key Objectives

• Write shell scripts in both Csh and Bourne shells.
• Describe kernel and shell functions.
• Describe the relationship between kernel, shell, and shell subprocesses.
• Write shell commands connected by pipe and tree constructs.
• Use shell commands individually and in scripts.

Course Overview

UNIX Shell Programming introduces users to the UNIX system shell. The course begins with an overview of the shell environment, and continues with discussions on the features and uses of shell commands and scripts. Lab exercises assist the student in understanding and using the shell commands.

Audience

The course is designed to meet the needs of programmers, system administrators, and anyone who needs to understand and use the features of the Bourne and C shells to solve problems and automate processes, especially through the creation of shell scripts.

Prerequisite

• UNIX Fundamentals

• vi or emacs

Course Content

Shell Programming Introduction

• File Types
• Tree Structures
• Pathname Syntax
• Meta Characters
• Filename Generation
• Pipes
• I/O Redirection
• Text Editing, ed, vi

Command Types

• Directory
• File Display
• File Access
• File Management
• Mail Filter
• Process Control

Bourne Shell and Environment

Metacharacters

C Shell and Environments

Internal Commands

Positional Parameters

Parameter Substitution

Conditional Branching

Signal Trapping

Bourne and C Shell Comparison