index.html

this is a book on pearl , simple example with explanation is given here. it could be beneficial for

Using Perl to Send Mail</A>

</UL>

<LI><A HREF="ch18.htm#ReceivingMailPOP">

Receiving Mail (POP)</A>

<LI><A HREF="ch18.htm#CheckingforUpnessEcho">

Checking for Upness (Echo)</A>

<LI><A HREF="ch18.htm#TransferringFilesFTP">

Transferring Files (FTP)</A>

<LI><A HREF="ch18.htm#ReadingtheNewsNNTP">

Reading the News (NNTP)</A>

<LI><A HREF="ch18.htm#TheWorldWideWebHTTP">

The World Wide Web (HTTP)</A>

<LI><A HREF="ch18.htm#Summary">

Summary</A>

<LI><A HREF="ch18.htm#ReviewQuestions">

Review Questions</A>

<LI><A HREF="ch18.htm#ReviewExercises">

Review Exercises</A>

</UL>



<H2><I><FONT SIZE=5 COLOR=#FF0000>Chapter </FONT></I><FONT SIZE=5 COLOR=#FF0000>19

</FONT><FONT SIZE=5>&nbsp;&nbsp;What Is CGI?</FONT></H2>

<UL>

<LI><A HREF="ch19.htm#WhyUsePerlforCGI">

Why Use Perl for CGI?</A>

<LI><A HREF="ch19.htm#CGIAppsversusJavaApplets">

CGI Apps versus Java Applets</A>

<LI><A HREF="ch19.htm#ShouldYouUseCGIModules">

Should You Use CGI Modules?</A>

<LI><A HREF="ch19.htm#HowDoesCGIWork">

How Does CGI Work?</A>

<LI><A HREF="ch19.htm#CallingYourCGIProgram">

Calling Your CGI Program</A>

<LI><A HREF="ch19.htm#YourFirstCGIProgram">

Your First CGI Program</A>

<LI><A HREF="ch19.htm#WhyAreFilePermissionsImportantinUNIX">

Why Are File Permissions Important in UNIX?</A>

<LI><A HREF="ch19.htm#HTTPHeaders">

HTTP Headers</A>

<LI><A HREF="ch19.htm#CGIandEnvironmentVariables">

CGI and Environment Variables</A>

<LI><A HREF="ch19.htm#URLENCoding">

URL ENCoding</A>

<LI><A HREF="ch19.htm#Security">

Security</A>

<LI><A HREF="ch19.htm#CGIwrapandSecurity">

CGIwrap and Security</A>

<LI><A HREF="ch19.htm#Cookies">

Cookies</A>

<UL>

<LI><A HREF="ch19.htm#CookieSecurity">

Cookie Security</A>

<LI><A HREF="ch19.htm#HowAreCookiesCreatedandRead">

How Are Cookies Created and Read?</A>

<LI><A HREF="ch19.htm#CanaVisitorsBrowserSupportCookies">

Can a Visitor's Browser Support Cookies?</A>

</UL>

<LI><A HREF="ch19.htm#DebuggingCGIPrograms">

Debugging CGI Programs</A>

<UL>

<LI><A HREF="ch19.htm#SendingOutputtotheServersLogFile">

Sending Output to the Server's Log File</A>

<LI><A HREF="ch19.htm#SendingSTDERRtotheWebBrowser">

Sending STDERR to the Web Browser</A>

<LI><A HREF="ch19.htm#CGITap">

CGITap</A>

<LI><A HREF="ch19.htm#GeneratinganErrorHTMLPage">

Generating an Error HTML Page</A>

</UL>

<LI><A HREF="ch19.htm#Summary">

Summary</A>

<LI><A HREF="ch19.htm#ReviewQuestions">

Review Questions</A>

<LI><A HREF="ch19.htm#ReviewExercises">

Review Exercises</A>

</UL>



<H2><I><FONT SIZE=5 COLOR=#FF0000>Chapter </FONT></I><FONT SIZE=5 COLOR=#FF0000>20

</FONT><FONT SIZE=5>&nbsp;&nbsp;Form Processing</FONT></H2>

<UL>

<LI><A HREF="ch20.htm#ABriefOverviewofHTML">

A Brief Overview of HTML</A>

<LI><A HREF="ch20.htm#ServerSideINCludes">

Server-Side INCludes</A>

<LI><A HREF="ch20.htm#HTMLForms">

HTML Forms</A>

<LI><A HREF="ch20.htm#HandlingFormInformation">

Handling Form Information</A>

<LI><A HREF="ch20.htm#FillinginaFormandMailingtheInformation">

Filling in a Form and Mailing the Information</A>

<LI><A HREF="ch20.htm#DebuggingFormProcessingCGIScripts">

Debugging Form Processing CGI Scripts</A>

<LI><A HREF="ch20.htm#CreatingaGuestbookforYourSite">

Creating a Guestbook for Your Site</A>

<UL>

<LI><A HREF="ch20.htm#TheBasicGuestbook">

The Basic Guestbook</A>

</UL>

<LI><A HREF="ch20.htm#Summary">

Summary</A>

<LI><A HREF="ch20.htm#ReviewQuestions">

Review Questions</A>

<LI><A HREF="ch20.htm#ReviewExercises">

Review Exercises</A>

</UL>



<H2><I><FONT SIZE=5 COLOR=#FF0000>Chapter </FONT></I><FONT SIZE=5 COLOR=#FF0000>21

</FONT><FONT SIZE=5>&nbsp;&nbsp;Using Perl with Web Servers</FONT></H2>

<UL>

<LI><A HREF="ch21.htm#ServerLogFiles">

Server Log Files</A>

<UL>

<LI><A HREF="ch21.htm#ExampleReadingaLogFile">

Example: Reading a Log File</A>

<LI><A HREF="ch21.htm#ExampleListingAccessbyDocument">

Example: Listing Access by Document</A>

<LI><A HREF="ch21.htm#ExampleLookingattheStatusCode">

Example: Looking at the Status Code</A>

<LI><A HREF="ch21.htm#ExampleConvertingtheReporttoaWebPage">

Example: Converting the Report to a Web Page</A>

<LI><A HREF="ch21.htm#ExistingLogFileAnalyzingPrograms">

Existing Log File Analyzing Programs</A>

<LI><A HREF="ch21.htm#CreatingYourOwnCGILogFile">

Creating Your Own CGI Log File</A>

</UL>

<LI><A HREF="ch21.htm#CommunicatingwithUsers">

Communicating with Users</A>

<UL>

<LI><A HREF="ch21.htm#ExampleGeneratingaWhatsNewPage">

Example: Generating a What's New Page</A>

<LI><A HREF="ch21.htm#ExampleGettingUserFeedback">

Example: Getting User Feedback</A>

</UL>

<LI><A HREF="ch21.htm#Summary">

Summary</A>

<LI><A HREF="ch21.htm#ReviewExercises">

Review Exercises</A>

</UL>



<H2><I><FONT SIZE=5 COLOR=#FF0000>Chapter </FONT></I><FONT SIZE=5 COLOR=#FF0000>22

</FONT><FONT SIZE=5>&nbsp;&nbsp;Internet Resources</FONT></H2>

<UL>

<LI><A HREF="ch22.htm#UsenetNewsgroups">

Usenet Newsgroups</A>

<LI><A HREF="ch22.htm#WebSites">

Web Sites</A>

<UL>

<LI><A HREF="ch22.htm#ThePerlLanguageHomePage">

The Perl Language Home Page</A>

<LI><A HREF="ch22.htm#PearlsofWisdombyLarryWall">

Pearls of Wisdom by Larry Wall</A>

<LI><A HREF="ch22.htm#Yahoo">

Yahoo</A>

<LI><A HREF="ch22.htm#TheCGIpmModule">

The CGI.pm Module</A>

<LI><A HREF="ch22.htm#SelinaSolsCGIScriptArchive">

Selina Sol's CGI Script Archive</A>

<LI><A HREF="ch22.htm#TheWebDevelopersVirtualLibrary">

The Web Developer's Virtual Library</A>

<LI><A HREF="ch22.htm#IntroductiontoCGI">

Introduction to CGI</A>

<LI><A HREF="ch22.htm#PerlforWin">

Perl for Win32</A>

<LI><A HREF="ch22.htm#RandalLSchwartzsHomePage">

Randal L. Schwartz's Home Page</A>

<LI><A HREF="ch22.htm#DaleBewleysPerlScriptsandLinks">

Dale Bewley's Perl Scripts and Links!</A>

<LI><A HREF="ch22.htm#MattsScriptArchive">

Matt's Script Archive</A>

<LI><A HREF="ch22.htm#TheComprehensivePerlArchiveNetwork">

The Comprehensive Perl Archive Network</A>

<LI><A HREF="ch22.htm#DatabaseAPIforPerl">

Database API for Perl</A>

<LI><A HREF="ch22.htm#TheCGICollection">

The CGI Collection</A>

<LI><A HREF="ch22.htm#HTMLFormProcessingModulesHFPMHomePage">

HTML Form Processing Modules (HFPM) Home Page</A>

<LI><A HREF="ch22.htm#PureAmiga">

PureAmiga</A>

<LI><A HREF="ch22.htm#MacPerl">

MacPerl</A>

<LI><A HREF="ch22.htm#CGIScriptsandHTMLForms">

CGI Scripts and HTML Forms</A>

<LI><A HREF="ch22.htm#TheCGIDocumentationbyNCSA">

The CGI Documentation by NCSA</A>

<LI><A HREF="ch22.htm#MiscellaneousSites">

Miscellaneous Sites</A>

</UL>

<LI><A HREF="ch22.htm#InternetRelayChatorIRC">

Internet Relay Chat, or IRC</A>

<LI><A HREF="ch22.htm#Summary">

Summary</A>

</UL>



<H2><A HREF="ch23.htm"><I><FONT SIZE=5 COLOR=#FF0000>Appendix </FONT></I><FONT SIZE=5 COLOR=#FF0000>A

</FONT><FONT SIZE=5>&nbsp;&nbsp;Answers to Review Questions</FONT></a></H2>



<H2><I><FONT SIZE=5 COLOR=#FF0000>Appendix </FONT></I><FONT SIZE=5 COLOR=#FF0000>B

</FONT><FONT SIZE=5>&nbsp;&nbsp;Glossary</FONT></H2>

<UL>

<LI><A HREF="ch24.htm#Abstraction">

Abstraction</A>

<LI><A HREF="ch24.htm#Alternation">

Alternation</A>

<LI><A HREF="ch24.htm#AlternativeQuotes">

Alternative Quotes</A>

<LI><A HREF="ch24.htm#ANChor">

ANChor</A>

<LI><A HREF="ch24.htm#AnonymousFuNCtionsandVariables">

Anonymous FuNCtions and Variables</A>

<LI><A HREF="ch24.htm#ANSI">

ANSI</A>

<LI><A HREF="ch24.htm#Argument">

Argument</A>

<LI><A HREF="ch24.htm#Array">

Array</A>

<LI><A HREF="ch24.htm#ArrayContext">

Array Context</A>

<LI><A HREF="ch24.htm#ArrayRange">

Array Range</A>

<LI><A HREF="ch24.htm#ArraySlice">

Array Slice</A>

<LI><A HREF="ch24.htm#ArraySplice">

Array Splice</A>

<LI><A HREF="ch24.htm#ASCII">

ASCII</A>

<LI><A HREF="ch24.htm#Assignment">

Assignment</A>

<LI><A HREF="ch24.htm#AssociativeArray">

Associative Array</A>

<LI><A HREF="ch24.htm#Associativitylefttorightamprighttoleft">

Associativity (left-to-right &amp; right-to-left)</A>

<LI><A HREF="ch24.htm#awk">

awk</A>

<LI><A HREF="ch24.htm#Backtracking">

Backtracking</A>

<LI><A HREF="ch24.htm#BinaryMode">

Binary Mode</A>

<LI><A HREF="ch24.htm#BitwiseOperations">

Bitwise Operations</A>

<LI><A HREF="ch24.htm#Block">

Block</A>

<LI><A HREF="ch24.htm#CallbyRefereNCe">

Call by RefereNCe</A>

<LI><A HREF="ch24.htm#CallbyValue">

Call by Value</A>

<LI><A HREF="ch24.htm#CharacterClasses">

Character Classes</A>

<LI><A HREF="ch24.htm#ChildProcess">

Child Process</A>

<LI><A HREF="ch24.htm#Class">

Class</A>

<LI><A HREF="ch24.htm#ClientServer">

Client/Server</A>

<LI><A HREF="ch24.htm#CommandLineOptions">

Command-Line Options</A>

<LI><A HREF="ch24.htm#Compiler">

Compiler</A>

<LI><A HREF="ch24.htm#CompileTimeError">

Compile-Time Error</A>

<LI><A HREF="ch24.htm#CoNCatenation">

CoNCatenation</A>

<LI><A HREF="ch24.htm#Constant">

Constant</A>

<LI><A HREF="ch24.htm#Constructor">

Constructor</A>

<LI><A HREF="ch24.htm#ContextArrayampScalar">

Context (Array &amp; Scalar)</A>

<LI><A HREF="ch24.htm#ControlCharacters">

Control Characters</A>

<LI><A HREF="ch24.htm#CR">

CR</A>

<LI><A HREF="ch24.htm#Database">

Database</A>

<LI><A HREF="ch24.htm#DataType">

Data Type</A>

<LI><A HREF="ch24.htm#Debugger">

Debugger</A>

<LI><A HREF="ch24.htm#Declaration">

Declaration</A>

<LI><A HREF="ch24.htm#Deconstructor">

Deconstructor</A>

<LI><A HREF="ch24.htm#Defined">

Defined</A>

<LI><A HREF="ch24.htm#Delimiter">

Delimiter</A>

<LI><A HREF="ch24.htm#DerefereNCe">

DerefereNCe</A>

<LI><A HREF="ch24.htm#DetailLine">

Detail Line</A>

<LI><A HREF="ch24.htm#DiamondOperator">

Diamond Operator</A>

<LI><A HREF="ch24.htm#Directory">

Directory</A>

<LI><A HREF="ch24.htm#DottedDecimalAddress">

Dotted Decimal Address</A>

<LI><A HREF="ch24.htm#EmptyStringsArraysListsandHashes">

Empty Strings, Arrays, Lists, and Hashes</A>

<LI><A HREF="ch24.htm#ENCapsulation">

ENCapsulation</A>

<LI><A HREF="ch24.htm#ENCryption">

ENCryption</A>

<LI><A HREF="ch24.htm#EndlessLoop">

Endless Loop</A>

<LI><A HREF="ch24.htm#EnvironmentVariables">

Environment Variables</A>

<LI><A HREF="ch24.htm#EOF">

EOF</A>

<LI><A HREF="ch24.htm#EscapeSequeNCe">

Escape SequeNCe</A>

<LI><A HREF="ch24.htm#Expression">

Expression</A>

<LI><A HREF="ch24.htm#FF">

FF</A>

<LI><A HREF="ch24.htm#Field">

Field</A>

<LI><A HREF="ch24.htm#Filehandle">

Filehandle</A>

<LI><A HREF="ch24.htm#Footer">

Footer</A>

<LI><A HREF="ch24.htm#Formats">

Formats</A>

<LI><A HREF="ch24.htm#ftp">

ftp</A>

<LI><A HREF="ch24.htm#FuNCtion">

FuNCtion</A>

<LI><A HREF="ch24.htm#Globbing">

Globbing</A>

<LI><A HREF="ch24.htm#GreedyRegularExpressions">

Greedy Regular Expressions</A>

<LI><A HREF="ch24.htm#Grep">

Grep</A>

<LI><A HREF="ch24.htm#Hash">

Hash</A>

<LI><A HREF="ch24.htm#Header">

Header</A>

<LI><A HREF="ch24.htm#HereDocuments">

Here Documents</A>

<LI><A HREF="ch24.htm#Hexadecimal">

Hexadecimal</A>

<LI><A HREF="ch24.htm#InfiniteLoop">

Infinite Loop</A>

<LI><A HREF="ch24.htm#InheritaNCe">

InheritaNCe</A>

<LI><A HREF="ch24.htm#Initialization">

Initialization</A>

<LI><A HREF="ch24.htm#Interpolation">

Interpolation</A>

<LI><A HREF="ch24.htm#Interpreter">

Interpreter</A>

<LI><A HREF="ch24.htm#InterprocessCommunication">

Inter-process Communication</A>

<LI><A HREF="ch24.htm#IO">

I/O</A>

<LI><A HREF="ch24.htm#IPC">

IPC</A>

<LI><A HREF="ch24.htm#KeyValuePair">

Key-Value Pair</A>

<LI><A HREF="ch24.htm#Label">

Label</A>

<LI><A HREF="ch24.htm#LF">

LF</A>

<LI><A HREF="ch24.htm#Library">

Library</A>

<LI><A HREF="ch24.htm#List">

List</A>

<LI><A HREF="ch24.htm#Literal">

Literal</A>

<LI><A HREF="ch24.htm#Loop">

Loop</A>

<LI><A HREF="ch24.htm#MetaCharacters">

Meta Characters</A>

<LI><A HREF="ch24.htm#Module">