PERL Programming

Overview: 

PERL is one of the most popular and prolific scripting languages around in the computing industry. Widely used, it is a handy tool for every engineer in the computing world. The goal of this 3-day program from Cralina is to provide a solid introduction to PERL for participants who wish to learn this programming language. This program will also provide insights into the various aspects of PERL programming that has made PERL a very popular programming language.

Target Audience:

• Developers/Designers, Senior Developers/Designers 
• Engineers who want to learn programming in PERL 
• Engineers who know shell scripting and who want to transition to PERL

Pre-requisite

• Familiarly with programming and operating systems.

Delivery Method:

Instructor lead and hands on. The program has an emphasis on hands-on coding for almost every topic.

Program Contents:

1. Introduction to PERL
   • How to Get PERL? 
   • Origin of “PERL” 
   • How Do I Make a PERL Program 
   • A tour of PERL
2. Scalar Data
   • What Is Scalar Data?
   • Numbers, Strings
   • PERL’s Built-in Warnings
   • Scalar Variables  Output with print
   • Control Structures (if)
   • Getting User Input
   • The chomp Operator
   • The while Control Structure
   • The undef Value
   • The defined Function
3. Lists and Arrays
   • Accessing Elements of an Array
   • Special Array Indices
   • List Literals and List Assignment
   • Interpolating Arrays into Strings
   • The foreach Control Structure
   • PERL’s Favorite Default: $_
   • Scalar and List Context
   • <STDIN> in List Context
4. Subroutines
   • System and User Functions
   • Defining a Subroutine
   • Invoking a Subroutine
   • Return Values
   • Arguments
   • Private Variables in Subroutines
   •  The local Operator
   • Variable-length Parameter Lists
   • Notes on Lexical (my) Variables
   • The use strict Pragma
   • The return Operator
5. Hash
   • What Is a Hash?
   • Hash Element Access
   • Hash Functions
   • Typical Use of a Hash
6. I/O in PERL
   • Input from Standard Input
   • Input from the Diamond Operator
   • The Invocation Arguments
   • Output to Standard Output
   • Formatted Output with printf
7. Regular Expressions
   • What’s a Regular Expressions?
   • Using Simple Patterns
   • A Pattern Test Program
   • Character Classes
   • General Quantifiers
   • Anchors
   • Memory Parentheses
   • Precedence
8. Working with Regular Experssions
   • Matches with m//
   • Option Modifiers
   • The Binding Operator, =~
   • Interpolating into Patterns
   • The Match Variables
   • Substitutions with s///
   • The split Operator
   • The join Function
9. Control structures
   • The unless Control Structure
   • The until Control Structure
   • Expression Modifiers
   • The Naked Block Control Structure
   • The elsif Clause
   • Autoincrement and Autodecrement
   • The for Control Structure
   • Loop Controls
   • Logical Operators
10. Filehandles and File Tests
    • What Is a Filehandle?
    • Opening a Filehandle
    • Fatal Errors with die
    • Using Filehandles
    • Reopening a Standard Filehandle
    • File Tests
11. Directory operations
    • Moving Around the Directory Tree
    • Globbing
    • An Alternate Syntax for Globbing
    • Directory Handles
    • Recursive Directory Listing
12. Working with files and directories
    • Removing Files
    • Renaming Files
    • Links and Files
    • Making and Removing Directories
    • Modifying Permissions
    • Changing Ownership Changing Timestamps
    • Using Simple Modules
13. Process Management
    • The system Function
    • The exec Function
    • The Environment Variables
    • Using Backquotes to Capture Output
    • Processes as Filehandles
    • Getting Down and Dirty with Fork
    • Sending and Receiving Signals
14. Working with Strings
    • Finding a Substring with index
    • Manipulating a Substring with substr
    • Formatting Data with sprintf
    • Advanced Sorting

Duration : 3 days

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