PERL Scripting Online Training

Perl Programming for Beginners

PERL Scripting Online Training – Join Now

Introduction to PERL Scripting Online Training Watch Lecture Online

  • Introduction to PERL Scripting Online Training Course.
  • Origin and Design Goals of Perl.
  • Overview of Perl Features.
  • Getting and Installing Perl.
  • Accessing Documentation via perldoc.
  • HTML-Format Reference Documentation.
  • Perl Strengths and Limitations.

Getting Started With Perl  

  • Explicit Invocation of the Perl Interpreter
    • Running Perl on UNIX vs. Windows
    • Running Perl from the Command Line
    • Using Command Line Options
    • Using Debug Mode
  • Implicit Invocation of the Perl Interpreter
  • Running and Debugging Perl Scripts
  • Simple and Compound Statements
  • Fundamental Input Techniques
  • Using the print Function to Generate Standard Output

Using Variables – Watch Lecture Online

  • Scalar Variables
  • Introduction to Standard Data Types
  • Retrieving Standard Input Using the Default Variable $_
  • Reserved Scalar Variables
  • Assigning Strings and Numbers to Scalar Variables
  • Declaring Constants for Persistent Values
  • Using strict to Declare Variables

Operators in Perl

  • Introduction to Fundamental Operators
  • Operator Precedence and Associativity
  • Using the Ternary Operator ?: as a Shortcut for the if Statement
  • Using <FILEHANDLE> and <> File I/O Operators for Standard Input/Output
  • Using the Shortcut Operators +=, -=, *=, /=

Flow Control: Conditional Statements and Looping 

  • Conditional Expressions and Logical Operators
  • if/else/elsif and unless
  • Constructing switch/case Equivalent Expressions
  • while Loops and do Loops
  • for and foreach Loops
  • Labels
  • Altering Program Flow with next, last, and redo
  • Trapping Errors with the eval Function
  • Terminating a Script with exit

Pattern Matching in Perl

  • Regular Expressions in Perl
  • Using Pattern Matching Operators
  • Altering Data with Substitutions in Regular Expressions
  • Using Backreferences to Capture Data from Regular Expression Matching
  • Global and Case-Insensitive Matches
  • Altering Data with Character Translation
  • Using Variables in Patterns

String Manipulation

  • String Comparison
  • String Relations
  • Concatenation
  • Substring Manipulation
  • Using chomp and chop to Eliminate EOL Characters
  • Escape Characters for Formatting
  • String Manipulation Functions

Subroutines and Parameters

  • Simplifying Scripts with Subroutines
  • Defining and Calling a Subroutine
  • Passing Arguments by Value
  • Passing Arguments by Reference
  • Using return to Return a Value
  • Controlling Variable Scope using myand local Keywords

File and Directory I/O

  • Using open and close
  • File Open Modes
  • Reading Files into Arrays
  • Retrieving File Metadata
  • Built-in File Management Functions
  • Using print and write
  • File Test Operators
  • Directory Manipulation Using opendir, closedir, readdir, chdir, mkdir andrmdir

Implementing Command Line Arguments

  • Reading Command Line Arguments from @ARGV
  • Read Files Explicitly with <ARGV> and Implicitly with <>
  • Manipulating Positional Parameters with push, pop, shift
  • Process Lists of Files
  • Processing Command Line Options with getopt or getopts
  • Analyzing Command Line Argument Values with the Getopt::Std andGetopt::Long Modules
  • Reserved Variables
  • Manipulating Identifiable Options UsingGetOptions

Debugging In Perl

  • Using the Built-in Perl Debugger
  • Starting the Debugger
  • Debugger Command Syntax
  • Checking for Script Syntax Errors
  • Solving Compile-Time Errors
  • Single-Stepping through a Script
  • Executing to Breakpoints
  • Setting Global Watches
  • Printing Values of Variables
  • Listing All Variables Used in the Script
  • Using Strict Error Checking
  • Quitting the Debugger

Packages and Modules

  • The Power of Packages and Modules
  • Introduction to Standard Modules
  • Where to Find Modules on the Internet
  • Installing a Module on UNIX or Windows
  • Creating Packages for Portability
  • Using Packages to Create Isolated Namespaces and to Separate Code
  • Creating Modules
  • Creating and Using Symbols in a Module
  • Using the Exporter to Export Symbols from a Perl Module

Input/Output Processing

  • Parsing Input
  • Using Standard Input, Standard Output, and Standard Error
  • String and Field Processing
  • Using Streams and Pipes
  • Using die to Quit with an Error
  • Redirecting Standard Output and Standard Error to a File
  • Getting Standard Input from a File

Perl Report Formatting

  • Defining Report Formats
  • Justifying Text (Left, Right, Center)
  • Using write to Generate Reports
  • Defining here Documents for Report Customization
  • Creating Report Headers
  • Using Built-in Variables to Control Report Appearance
  • Printing Line Numbers on a Report
  • Formatting Multi-Line Output
  • Writing Formatted Text to a File
November 14, 2018

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