KornShell Programming Tutorial

ISBN-10: 020156324X
ISBN-13: 9780201563245
Edition: 1991
Authors: Barry Rosenberg
List price: $49.99
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Book details

List price: $49.99
Copyright year: 1991
Publisher: Addison Wesley Professional
Publication date: 7/1/1991
Binding: Paperback
Pages: 352
Size: 7.50" wide x 9.25" long x 1.00" tall
Weight: 1.232
Language: English

List of Tables
List of Figures
Preface
That No One Will Ever Read
Author's Note Regarding the ksh93 Edition
Before Writing Your First KornShell Scripts
Getting Started
What Shell Is Executing My Script?
Operating System Commands in a Shell Script
Beware: Are You Allowed to Execute This Script?
Commenting Your Code
Beware: Picking a Bad Name for Your Script
The Usage Line
Simple Output
Variables
Beware: Variable Names Are Case Sensitive
Simple Input
Obtaining the Value of a Variable
Beware: The Dollar Sign in Read Statements
Newlines, Semicolons, White Space, and Columns
Beware: Confusing + and -
Assigning a Value to a Variable
Beware: Common Mistakes When Assigning Variables
Finding Your Mistakes
Can I Quote You on That?
Data Types
If You're New to Programming
If You're an Experienced Programmer
Declaring Strings
Declaring Integers
Binary, Octal, Hex, and So On
Declaring Floats
Declaring Constants
Declaring nameref Variables
Declaring Arrays
Declaring Arrays with set -A
Printing Array Values
Beware: Common Array Mistakes
Declaring Associative Arrays
Probing Arrays
Declaring Structures Part I
Declaring Structures Part II
Arrays of Structures
Math
If You're New to Programming
If You're an Experienced Programmer
Double Parentheses
Integer Addition, Subtraction, and Multiplication
Integer Division
Floating-Point Math
Mixing Floating-Point and Integer Math
Grouping Mathematical Operations
Beware: Common Mistakes in Math Operations
Mathematical Assignment Operators
The Triggy Stuff
Beware: Math Functions Inside Double Parentheses
A Practical Math Example
Math Operator Summary
Pattern Matching. If You're New to Programming
If You're an Experienced Programmer
For Everyone
The ? Wildcard
The [char1char2...charN] Wildcard
Character Classes
The * Wildcard
Beware: Matching Filenames
The ?(pattern1
Beware: White Space within Patterns
The @(pattern1
The !(pattern1
The +(pattern1
The !(subpattern1
Matching Subpatterns with \d
Simple Commands Containing Patterns
Wildcard Summary
Conditions
If You're New to Programming
If You're an Experienced Programmer
Tests on Numbers and Strings
Comparing Numbers with if
Beware: Common Mistakes Using if with Numbers
Comparing Numbers with the ? : Operator
Beware: Common Mistakes in ? : Compound Statements. else and elif
Comparing Strings with if
Comparing Alphabetical Order with < and >
Comparing a String to a Pattern with if
Beware: Common Mistakes Comparing

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