Overview of Operating Systems
Basic commands of UNIX/LINUX

Perl Overview

• PERL history
• Running Perl scripts
• Data types
• Basic concepts (assignment, comments
• Standard I/O, print)

Scalar Data types

• Numbers and strings
• Literals and variables
• Numeric functions Interpolation
• String functions

Flow Control

• Conditional statements
• Relational and logical operators
• Control loops

Arrays

• Variables
• Creation, Assignment and access
• Built –in array functions

Hashes (Associative Arrays)

• Variables, creation, assignment and access
• Access
• Hashes as arrays
• Build in Hash Functions

Subroutines

• Basic I/O (STDIN, STDOUT, STDERR)
• Files handle and file handling
• Error handling
• Directory Processing
• System Processing Management

Regular expression

• Pattern matching
• Templates
• Wildcards and character classes
• Recovering previous matches
• Recovering previous matches

User Defined Functions

• Using and creating Functions
• Arguments and Return values
• Scooping
• Prototypes