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Introduction to Perl Programming: Hands-On
You Will Learn How To
- Quickly create effective, reusable Perl scripts
- Take advantage of Perl 5's many small operators and built-in functions
- Structure code with user-generated subroutines
- Exploit the many additional object-oriented packages available on the Internet
- Build real-world scripts that can be used on UNIX, Linux and Win32 platforms
- Solve complex data manipulation tasks with ease
Course Benefits
Perl is a powerful object-oriented scripting language used extensively with UNIX, Linux, Win32 and the Internet. In this course, you learn to write reusable scripts with Perl 5. Through intensive exercises, you learn to use Perl in your operating system and application environments as well as apply built-in functions of the language and make use of external modules.
Who Should Attend
UNIX, Linux and Windows administrators, software engineers, programmers and power users. Previous experience with a procedural or object-oriented programming language is assumed. Knowledge of UNIX scripting tools and regular expressions is helpful.
Hands-on Training
During this course, you perform extensive exercises that provide in-depth, hands-on experience. Exercises include:
- Parsing and manipulating text with Perl regular expressions
- Reading and writing standard I/O streams and real-world data files
- Extracting and arranging information from multiple files
- Empowering scripts by using supplied and third-party OO modules
- Building network-capable scripts to access e-mail, database and Web servers
Course Content
- Perl strengths: ease of programming with operators, flexibility, execution speed
- Reusable tool building for system admin, text manipulation, the Internet
- Popular application areas: networking, text filtering, Web application programming
- Invoking Perl scripts under UNIX/Linux with "shebang" syntax
- Starting Perl scripts under Win32 via command line associations
- Getting help with perldoc
- Scalars vs. lists vs. hashes
- Strings and interpolated strings
- Making sense of special variables
- Working in the right context
- Generating references to named variables
- Creating references to anonymous data
- Building multidimensional arrays
- Working with multidimensional hashes
- Handling standard I/O streams
- Defining and using file handles
- Parsing command line arguments
- Reading and writing data files
- Extracting important text information
- Building on UNIX regular expressions
- Altering data with substitutions
- Performing global and case-insensitive matches
- Manipulating arithmetic expressions
- Replicating and growing strings
- Saving time with assignment operators
- Obtaining file attributes
- Making decisions with logical operators
- Establishing and using ranges
- Making decisions with if/else/elseif
- Creating loops with do, while, until, for and foreach
- if and unless as statement modifiers
- Altering flow with next and last
- Constructing switch statements
- Defining and calling a subroutine
- Passing and receiving parameters
- Returning values to the caller
- Localising variables: my and local
- Accessing global variables
- Extracting local variables with shift
- String functions for text manipulation
- Processing arrays with list functions
- Arranging information with sort
- Sorting data on multiple fields
- Manipulating file system entries
- Reading binary files
- Dissecting and creating records with split and join
- Formatting tabular output
- An introduction to OO in Perl
- Methods, classes and constructors
- Surveying and obtaining third-party packages from CPAN
- How to use use
- Defining a schema to employ OO modules
- Calling methods with the -> syntax
- Passing initialisation parameters
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Win32 is a registered trademark of Microsoft Corporation. Linux is a registered trademark of Linus Torvalds. UNIX is a registered trademark of X/Open Company, Limited.
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