PERL Scripting Training in Hyderabad Overview of Perl

Overview of Perl

What Is PERL?
The Input Operator
Print / Printf Statements
Running Perl Programs
Sample Program
Another Sample Program
Yet Another Example
PERL Variables

Data Types
Variable Names and Syntax
Variable Naming
Scalar and List Contexts
The Repetition Operator
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
Quoting and Interpolation

String Literals
Interpolation
Array Substitution and Join
Backslashes and Single Quotes
Quotation Operators
Command Substitution
Here Document
Conditional Statements

If Statements
If Else Statements
If Else if Statements
Nested if Statements
Switch Statements

Looping Statements

While Statements
Until Statements
For Statements
For Each Statement
Regular Expressions

Pattern Matching Overview
The Substitution Operator
Regular Expressions
Special Characters
Quantifiers(*,+,?,{})
Assertions(^,$,\b,/B)
Trans
late
Split
Join
Subroutines

Overview of Subroutines
Passing Arguments
Private Variables
Returning Values
Files Handling

Overview of File I/
The open Function
The input Operator
Default Input Operator
The Print Function
Reading Directories
Packages and Modules

Packages
Modules
The bless Function
Database Connectivity
Using DBI
Fetching output of the Query through Perl
Running other DB queries