Perl Tutorials - Herong's Tutorial Examples

∟File Handles and Data Input/Output

This chapter provides tutorial examples and notes about file handles and data input or output. Topics include using open() function to open file handles; using print() to output data; using <file_handle> to input data.

open() - Opening File Handles for Input and Output

print() - Printing Output to File Handles

<file_handle> - Reading Data from File Handles

Conclusions:

• open(IN, "< $file"); - Opening a file handler to a file for data input.
• <IN> - Reading one record or all records from a file handler.
• open(OUT, "> $file"); - Opening a file handler to a file for data output.
• print OUT @list; - Printing a list of values to a file handler.

Table of Contents

 About This Book

 Perl on Linux Systems

 ActivePerl on Windows Systems

 Data Types: Values and Variables

 Expressions, Operations and Simple Statements

 User Defined Subroutines

 Perl Built-in Debugger

 Name Spaces and Perl Module Files

 Symbolic (or Soft) References

 Hard References - Addresses of Memory Objects

 Objects (or References) and Classes (or Packages)

 Typeglob and Importing Identifiers from Other Packages

 String Built-in Functions and Performance

►File Handles and Data Input/Output

 Open Files in Binary Mode

 Open Directories and Read File Names

 File System Functions and Operations

 Converting Perl Script to Executable Binary

 Using DBM Database Files

 Using MySQL Database Server

 Socket Communication Over the Internet

 XML::Simple Module - XML Parser and Generator

 XML Communication Model

 SOAP::Lite - SOAP Server-Client Communication Module

 Perl Programs as IIS Server CGI Scripts

 CGI (Common Gateway Interface)

 XML-RPC - Remote Procedure Call with XML and HTTP

 RPC::XML - Perl Implementation of XML-RPC

 Integrating Perl with Apache Web Server

 References

 Printable Copy - PDF Version