Unix Shell Programming and Report Generation

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Topic Outline

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Writing Bourne Shell Scripts

-	Environment variables
-	User-defined variables
-	Substitution of Variables
-	Looping Statement Constructs
-	Decision Statements
-	Command Substitution in Variables
-	Using Export and Expr
-	Handling Signals with Trap

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Writing Korn Shell Scripts

-	Environment Variables
-	User-defined Variables
-	Substitution of Variables
-	Command Substitution in Variables
-	Decision Statements
-	Looping Statement Constructs
-	Typesetting Variables for Output and Integer Variables
-	The Select Construct
-	Using and Defining Functions
-	Accessing Records With Pipes or Exec
-	Parameter/Variable Substitutions
-	Parent-Child Process Communications
-	Defining and Using Arrays

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Using the awk Utility to Generate Reports

-	Calling Techniques
-	Patterns and Actions
-	BEGIN and END Patterns
-	Built-in Variables
-	Procedure-defined Variables in awk
-	Formatted Output Using printf
-	Re-direction of input and output
-	Defining Arrays
-	Obtaining Command Line Arguments
-	Signature Lines

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Special Features of the nawk Utility

Unix Shell Programming and Report Generation

4 days

Description

This course teaches the techniques needed to develop advanced shell and reporting type procedures under Unix. Hands-on exercises reinforce the concepts. All Unix systems support the techniques shown in this course.

Audience

Users, system administrators, application programmers, and system programmers.

Prerequisite

Unix Basics and Unix Utilities or equivalent experience.

Objectives

Students will be able to:

use Unix, awk, nawk, Bourne, and Korn shell commands to maintain collections of files

control usage of shell command scripts

generate reports using the (n)awk facility

develop executable files

perform user-level file backup