Top Rated Scripts | CGI & Perl | Tutorials & Tips

A comprehensive list of answers to some of the most commonly asked questions on CGI programming. It ranges from basic questions and techniques to trouble shooting and other CGI resource guide on the Web.

One of the methods that the web server uses to pass information to a cgi script is through environmental variables. These are created and assigned appropriate values within the environment that the server spawns for the cgi script. This page highlights some of the most commonly used ones, along with a brief description and notes on possible uses for them.

This article provides a short CGI program that can print every environment variable it knows.

This tutorial explains how to create documents which include other documents and various dynamically generated information, such as the current date, the file's last modification date, and the size or last modification of other files.

Answers to general questions on running CGI scripts and programs. Topics include: Getting Started (Can you run CGI, Script Filename, Test Before Going Public), Beginning a Script, File Permissions, Editing a UNIX Script in DOS/Win, Testing the Script Locally, CGI Paths, and Web Testing.

This note describes how to get information about a remote user from within a CGI-bin script, and lists the information available.

Hints and tips on debugging Perl CGI scripts and identifying some possible causes of server errors.

This introductory tutorial on CGI takes a look at what CGI is, requirements to run CGI scripts, how to install (upload) CGI scripts onto your server and more.

Intended for anyone who knows HTML, but doesn't know Perl or CGI programming, this Web-based class introduces you to writing Perl CGI scripts, teaches you the basics of writing CGI's, and walks you through several examples of common CGI programming applications for the Web.

A collection of hundreds of frequently asked questions and answers on everything about Perl. It comprises 10 different sections and available in several different formats.

What is CGI? What is Perl? Chmod? Executable? 501 Errors? What is a cgi-bin? Find your answers to these questions in this introdutory CGI tutorial. It also covers creating dynamic content, configuration on the server-side, the whole server-side process, CGI script debugging, and more.

The tutorial covers the definition and how to start creating CGI programs in Perl. Many key CGI elements are explained with solid examples. Topics include: Forms, Environment Variables, Imagemaps, Tracking the User and more.

This tutorial tackles one of the most common newbie questions, how to install your regular joe CGI Script.

These are a few guidelines to help you solving problems with your CGI Script. Topics include: Short overview of the CGI calling process, Server Errors - The server fails to execute the CGI, Logical Errors (Errors in the program flow), and more.

Find out what those server response codes like 401, 404, 500 mean. It can help you troubleshoot minor problems - knowing these are a must if you'll be working on programs that run on a server.

This is a list of common mistakes that people make when writing Perl scripts and suggestions on how to fix them. Included are general help tips on how to debug - very important particularly for beginners at programming. This list is based on the author's personal experience and complaints found on newsgroups/message boards.

This is an introduction to simple output in a perl script. The case study goes into greater detail with quotes and EOF markers and how metacharacters and escape sequences modify the output.

This document is a step-by-step tutorial for designing and serving graphical maps of information resources with either the external imagemap CGI script or with the built in imagemap support in NCSA HTTPd 1.5. Through such a map, users can be provided with a graphical overview of any set of information resources; by clicking on different parts of the overview image, they can transparently access any of the information resources. Sample examples available.

This page provides assistance with the implementation of imagemaps. It provides short answsers to basic questions and external links for tools and scripts for creating imagemaps.

Perl and MySQL can be used together.... so why can't Perl and mSQL be together as well? Well, they can... using the same Perl module as well. Check out what you can and can't do with it here.