Perl Programming Essentials

Master the skills for programming in Perl

Course Code : 1333

$2595

Overview
Schedule classes
What you'll learn
Outline
Prerequisites
Who should attend

Overview

This course dives into the core Perl and web development world. This is an intermediate and beyond level course, coupling the most current, effective techniques with best practices. It equips participants with the skills and knowledge required to carry our effective programming in Perl and manage the associated tasks in an enterprise environment, helping them get back to work prepared to immediately simplify and automate the tasks in their organization using Perl.

Schedule Classes

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Course Delivery

This course is available in the following formats:

Live Classroom
Duration: 3 days

Live Virtual Classroom
Duration: 3 days

What You'll learn

Create a working script that gets input from the command line, the keyboard, or a file
Use arrays to store and process data from files
Create formatted reports
Use regular expressions
Use the appropriate types of variables and data structures
Refactor duplicate code into subroutines and modules
What is available in the standard library
Use shortcuts and defaults, and what they replace

Outline

Module 1: An overview of Perl

What is Perl?
Perl is compiled and interpreted
Perl advantages and disadvantages
Downloading and installing Perl
Which version of Perl
Getting help

Module 2: Creating and running Perl programs

Structure of a Perl program
Running a Perl script
Checking syntax and warnings
Execution of scripts under Unix and Windows

Module 3: Basic Data and I/O

Numeric and text literals
Math operators and expressions
Scalar variables
Default values
Writing to standard output
Command line arguments
Reading from the standard input

Module 4: Logic and loops

About flow control
The if statement and Boolean values
Using unless and elsif
Statement modifiers
warn () and die ()
The conditional construct
Using while loop and its variants
Using the for loop

Exiting from loops

Module 5: Lists and arrays

The list data type
Accessing array elements
Creating arrays
List interpolation
Arrays and memory
Counting elements
Iterating through an array
List evaluation
Slices and ranges

Module 6: Reading and writing text files

File I/O overview
Opening a file
Reading text files
Writing to a text file
Arrays and file I/O
Using the <> operator

Module 7: List functions

Growing and shrinking arrays
The split () function
Splitting on whitespace
Assigning to literal lists
The join () function
The sort () function
Alternate sort keys
Reversing an array

Module 8: Formatting output

Using sprintf () and printf ()
Report formatting overview
Defining report formats
The write () function
Advanced filehandle magic

Module 9: Hashes

Hash overview
Creating hashes
Hash attributes
Traversing a hash
Testing for the existence of elements
Deleting hash elements

Module 10: References

What is a reference?
The two ways to create references
References to existing data
References to anonymous data
Dereferencing scalar, array, and ash references
Dereferencing elements of arrays and hashes
Multidimensional arrays and other data structures

Module 11: Text and Regular Expressions

String length
The substr () function
The index () and rindex () functions
String replication
Pattern matching and substitution
Regular expressions

Module 12: Raw file and data access

Opening and closing raw (binary) files
Reading raw data
Using seek () and tell ()
Writing raw data
Raw data manipulation with pack () and unpack ()

Module 13: Subroutines and variable scope

Understanding packages
Package and lexical variables
Localizing built-in variables
Declaring and calling subroutines
Calling subroutines
Passing parameters and returning values

Module 14: Working with the operating system

Determining the current OS
Environment variables
Running external programs
User identification
Trapping signals
File test operators
Working with files
Time of day

Module 15: Shortcuts and defaults

Understanding $_
shift () with no array specified
Text file processing
Using grep () and Using map ()
Command-line options for file processing

Module 16: Data wrangling

Quoting in Perl
Evaluating arrays
Understanding qw ()
Getting more out of the <> operator
Read ranges of lines
Using m//g in scalar context
The /o modifier
Working with embedded newlines
Making REs more readable

Perl data conversion

Quoting in Perl
Evaluating arrays
Understanding qw ()
Getting more out of the <> operator
Read ranges of lines
Using m//g in scalar context
The /o modifier
Working with embedded newlines
Making REs more readable
Perl data conversion

Module 17: Using the Perl Library

The Perl library
Old-style library files
Perl modules
Modules bundled with Perl
A selection of modules
Getting modules from ActiveState
Getting modules from CPAN
Using Getopt: Long

Module 18: Some Useful Tools

Sending and receiving files with Net: FTP
Using File: Find to search for files and directories
Grabbing a web page
Some good places to find scripts
Perl man pages for more information
Zipping and unzipping files

Prerequisites

Participants must have user-level knowledge of an operating system such as UNIX or Windows. While not mandatory, basic skills in at least one other programming language are desirable.