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Perl Programming on Unix

Perl Programming on Unix

Overview

Course code: 
UN006
Duration: 
5
Time Unit: 
Day(s)
Overview: 

Perl has been described as C, awk, sed, and shell programming all wrapped into one language. In this intense, 5-day, hands-on programming course, you will learn how to take advantage of Perl's power through examples and extensive exercises. Arrays and hashes, I/O, regular expressions, subroutines, and complex data structures are covered in depth. The course also introduces object-oriented programming in Perl, as well as UNIX multi-tasking and Perl sockets programming.

Topics

Topics: 

1. Course Introduction
- Course Objectives
- Course Overview
- Using the Workbook
- Suggested References

2. Overview of Perl
- What is Perl?
- Running Perl Programs
- Sample Program
- Another Sample Program
- Yet another Example

3. Perl Variables
- Three Data Types
- Variable Names and Syntax
- Variable Naming
- Lists
- Scalar and List Contexts
- The Repetition Operator

4. Arrays and Hashes
- Arrays
- Array Functions
- The foreach Loop
- The @ARGV Array
- The grep Function
- Array Slices
- Hashes
- Hash Functions
- Scalar and List Contexts Revisited

5. Quoting and Interpolation
- String Literals
- Interpolation
- Array Substitution and Join
- Backslashes and Single Quotes
- Quotation Operators
- Command Substitution
- Here Documents

6. Operators
- Perl Operators
- Operators, Functions and Precedence
- File Test Operators
- Assignment Operator Notations
- The Range Operator

7. Flow Control
- Simple Statements
- Simple Statement Modifiers
- Compound Statements
- The next, last, and redo Statements
- The for Loop
- The foreach Loop

8. I/O: Input Operations and File I/O
- Overview of File I/O
- The open Function
- The Input Operator < >
- Default Input Operator
- The print Function
- Reading Directories

9. Regular Expressions
- Pattern Matching Overview
- The Substitution Operator
- Regular Expressions
- Special Characters
- Quantifiers (*, +, ?, {})
- Assertions (^, $, \b, \B)

10. Advanced Regular Expressions
- Substrings
- Substrings in List Context
- RE Special Variables
- RE Options
- Multi-line REs
- Substituting with an Expression
- Perl RE Extensions

11. Subroutines
- Overview of Subroutines
- Passing Arguments
- Private Variables
- Returning Values

12. References
- References
- Creating References
- Using References
- Passing References as Arguments to Subroutines
- Anonymous Composers
- The Symbol Table

13. Complex Data Structures
- Two-dimensional Arrays in Perl
- Anonymous Arrays and Anonymous Hashes
- Arrays of Arrays
- Arrays of References
- A Hash of Arrays
- A Hash of Hashes
- And So On...

14. Packages and Modules
- Packages
- BEGIN and END Routines
- require vs. use
- Modules
- The bless Function

15. Introduction to Object-Oriented Programming in Perl
- What is Object-Oriented?
- Why Use Object-Oriented Programming?
- Classes, Objects, and Methods in Perl
- Inheritance, the "is-a" Relationship
- Containment, the "has-a" Relationship
- Overloaded Operators
- Destructors

16. Binary Data Structures
- Variable-Length (Delimited) Fields
- Variable vs. Fixed
- Handling Binary Data
- The pack Function
- The unpack Function
- The read Function
- C Data Structures

17. Multitasking with Perl
- What are Single and Multitasking?
- UNIX Multi-tasking Concepts
- Process Creation with fork
- Program Loading with exec
- File Descriptor Inheritance
- How UNIX Opens Files
- One-Way Data Flow – Pipes
- Final Result - Page Viewing

18. Sockets Programming in Perl
- Clients and Servers
- Ports and Services
- Berkeley Sockets
- Data Structures of the Sockets API
- Socket System Calls
- Generic Client/Server Models
- A Little Web Server

Prerequisites

Prerequisites: 

Fundamentals of UNIX. Experience in a high-level programming language, such as C, C++, or Java, is strongly recommended.

Audience

Audience: 

Programmers and system administrators.