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 ::   Intro to Windows Perl
 ::   Intro to Perl 5
 ::   Intro to Perl
 ::   Intro to Perl Taint mode
 ::   Sherlock Holmes and the Case of the Broken CGI Script
 ::   Writing COM Components in Perl

Java tutorials
 ::   Intro to Java
 ::   Cross Browser Java

Misc technical tutorials
 ::   Intro to The Web Application Development Environment
 ::   Introduction to XML
 ::   Intro to Web Design
 ::   Intro to Web Security
 ::   Databases for Web Developers
 ::   UNIX for Web Developers
 ::   Intro to Adobe Photoshop
 ::   Web Programming 101
 ::   Introduction to Microsoft DNA

Misc non-technical tutorials
 ::   Misc Technopreneurship Docs
 ::   What is a Webmaster?
 ::   What is the open source business model?
 ::   Technical writing
 ::   Small and mid-sized businesses on the Web

Offsite tutorials
 ::   ISAPI Perl Primer
 ::   Serving up web server basics
 ::   Introduction to Java (Parts 1 and 2) in Slovak

 

introduction to web programming
while  
The while loop also performs iteration and in CGI scripts is primarily for reading lines in a file. The while loop can be used to read and print out every line of a file with the following syntax:

    open ([FILE_HANDLE_NAME], "[filename]");
    while (<[FILE_HANDLE_NAME]>)
       {
       print "$_";
       }
    close ([FILE_HANDLE_NAME]);

The script would print out every line in the file "filename" because the "$_", the Perl "default" variable, represents "the current line" in this case.

The process of opening and closing files is covered in the "File Management" section later.

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