Free Article HomeSubmit Article l Contact Us


CGI: What the Heck Is That? 
Let's unlock a little bit of the mystery about something called CGI. If it
helps any, CGI means Common Gateway Interface. This is a method which is
used to exchange data between the server (the hardware and software that
actually allows you to get to your web site) and a web client (your
browser). CGI is actually a set of standards where a program or script (a
series of commands) can send data back to the web server where it can be
processed.

Typically, you use standard HTML tags to get data from a person, then pass
that data to a CGI routine. The CGI routine then performs some action with
the data.

Some of the more common uses of CGI include:

- Guestbooks - The CGI routine is responsible for accepting the data,
ensuring it is valid, sending an email acknowledgement back to the writer,
perhaps sending an email to the webmaster, and creating the guestbook entry
itself.

- Email Forms - A simple CGI forms routine just formats the data into an
email and sends it back to the webmaster. More complicated routines can
maintain a database, send an acknowledgement and validate data.

- Mailing List Maintenance - These routines allow visitors to subscribe and
unsubscribe from a mailing list. In this case, the CGI routine maintains a
database of email addresses, and the better ones send acknowledgements back
to the visitor and webmaster.

A CGI routine can be anything which understands the CGI standard. A popular
CGI language is called PERL, which is simple to understand and use (well,
compared to other languages). PERL is a scripting language, which means each
time a PERL routine is executed the web server must examine the PERL
commands to determine what to do. In contrast, a compiled language such as
C++ or Visual Basic can be directly executed, which is faster and more
efficient.

Okay, in a nutshell (and greatly simplified), here's how it works:

1) You (the webmaster) specify a form tag which includes the name of the CGI
routine.

2) You create HTML tags which retrieves data from your visitors.

3) Each of the input tags includes a variable name. The data which is
retrieved from the visitor (or directly set if the tag includes the "hidden"
qualifier) is placed in the variable name.

4) When the visitor presses the "submit" button, the CGI routine which was
specified in the form tag is executed. At this time, the CGI routine "takes
control", meaning the browser essentially is waiting for it to complete.

5) This CGI routine can get data from variable names. It retrieves the data
and does whatever action is required.

6) When the CGI routine finishes, it returns control back to the web client
(the browser).

Some important things to remember about CGI routines:

- You can install CGI routines on your own site if your host allows it -
Addr.Com is an example of a web host which allows for CGI routines. Some web
hosts do not allow you to install your own routines but do provide some
pre-written ones to you. If these are not sufficient for your needs, you can
find a remote hosting service to provide the necessary functions.

- Generally, if you install your own routines they must be installed in the
cgi-bin directory of your site. This is a special location which allows
scripts and programs to be executed.

- CGI routines work best on Apache-style servers. Windows NT and Windows
2000 does support CGI, but it tends to be slow and problematic.

- If you use a remote hosting service, you must remember that although they
appear to be giving you this for free, you are actually paying a price.
Usually they want to display advertisements, although some of them actually
take visitors away from your site.

- When you write a CGI routine, you have the choice of a scripting language
like PERL or a compiled language such as C++ or Visual Basic. Anything which
can execute on the web server is acceptable.

I hope this short introduction to CGI has cleared up some of the mystery.

Author Info:

Richard Lowe Jr. is the webmaster of Internet Tips And Secrets. This website includes over 1,000 free articles to improve your internet profits, enjoyment and knowledge. Web Site Address: http://www.internet-tips.net Weekly newsletter: http://www.internet-tips.net/joinlist.htm Daily Tips: mailto:internet-tips@GetResponse.com

 
30 Most Recent Articles :
A Disputed New Business:Virtual Property Exchange

In many ways, the in-game economy is similar to a real world economy - goods and services are traded to mutual advantage and are mediated in currencies(gold,platinum,credit,etc.). An online broker, who goes by the screen name Rolala, was not a fan of online games until his 15-year-old son be[ Read Article]

THE UNITED STATES, A Terrorist Nation

I love the United States of America, but I cannot tolerate the UNITED STATES OF AMERICA. No I am not shouting at you, I am simply making a distinction, a difference that thirty-seven states of the union have noticed and moved to rectify. You see, AMERICA isn’t America anymore, nor does it in anyw[ Read Article]

Dollars and Sense

When I speak of the Federal Reserve and the fiat monetary system that controls our lives I feel as though my words are falling on deaf ears. I have the sense that the simplest conversations suggesting that change must be made invoke fear and condemnation from my fellow citizens. When will we tak[ Read Article]

Constitutionality

Is the 16th Amendment constitutional? Of course it is, the Supreme Court has made that as clear as it did the issue of slavery. But let us remember that it took the lives of more than 365,000 brave American men and the destruction of the Republic to wrest the matter from the courts and resolve the[ Read Article]

Five Secrets to Effective Pay-Per-Click Advertising

With so many companies swarming the World Wide Web with their products, how can you and your products and services stand out? Your ready answer would most likely be effective marketing. But how? How can you catch the eye of a surfer skimming carelessly through web pages? How can you keep the at[ Read Article]

How to Sell Bonds

If you want to make good money with banks, or any institution, Government and agency bonds are where it is at. Simply because all Government bonds and agencies are AAA rated, and banks can buy millions of dollars of any bond without incurring any credit risk. All banks own bonds of some sort, a[ Read Article]

Closing in the Car Business

The “P” Word. Closing is all about helping car customers make positive decisions. It is not about pressure or manipulation. Your customers need help overcoming the “P” word. Procrastination! Procrastination is natural when it comes to making a buying decision. Your customer is trying to avoid [ Read Article]

If You Build It They Will Come, or Will They?

All right, so you invested your time and energy to build your organization a great new web site, but you are not getting quite the results you were hoping for. Few customers are visiting or interacting with you and rarely do you get prospects to contact you through the site. So what can you do to [ Read Article]

Confessions of a Yoga Teacher

The following are questions that Yoga teachers still need to answer, despite overwhelming evidence that Yoga is ?the mother of all health maintenance systems.? Mainstream thought is finally catching up, with the progress Yoga is making, but it has taken 5,000 years for us to get this far. Serio[ Read Article]

Vertical Creep in Search Results :: Should Organic Optimizers be Concerned?

I thought for this week I’d give a summary of some of the more interesting Search Engine Strategies sessions which are currently going on in New York City. I was at SES as a speaker last year in New York and I have to say, there is a wealth of information there even if some of it is contradict[ Read Article]

How to build link popularity fast and free

We all knew that back link or link popularity is a big factor to get good position in any search engines. But building link popularity some times really hard if you don't know how to do it. One of the hardest problem for new webmasters is to get back link to their newly stablis[ Read Article]

Does Chiropractic Care Really Make Sense?

The Role of Chiropractic in Treatment Beyond the Resolution of Symptoms Do you have the same nagging injury that never seems to go away? Are you suffering needlessly with pain? Are you fed up with taking painkillers? Do you want to find out what is causing your pain? If your answer is ‘ye[ Read Article]

The Economic Implications of Buying Drugs Online

Although the Internet is fairly new (at least to the mainstream) online shopping has grown by leaps and bounds. Now you can buy almost anything you need, from food to fishing equipment, right through your computer. Of course, this has meant that commerce has been forced to adapt to the changing co[ Read Article]

Manning and Manning-Can Either Brother Win the Big One?

It was just over a year ago, after the Colts lost to the Pats in their post-season contest, that Boomer Esiason said on national television, "I think maybe Peyton (Manning) is this generation's Dan Marino." Esiason went on to state that Manning "is a great football player, but he's not going to get[ Read Article]

Branding, Branding, Branding - MSN fails to keep it Straight

Sometimes you see promotions come along and you wonder: did they just do that? The current MSN promotion called msnsearchandwin is a prime example of this. Not only do they use “black hat” or at least “questionable” tactics on the site, but the messaging is inconsistent. In this article [ Read Article]

The New MSN Search Interface :: A positive change or the antithesis of transformation?

Now, instead of wide blue bars there are sleek silver-grey bars. Also, the top bar where the search box is became narrower. To me this makes the page seem less “closed in” and more visually appealing. I now feel as if I can trust the results more because they have more room. I’ve also noti[ Read Article]

Malta Holidays

With Malta visitor numbers static in recent years and facing new competiton from former Eastern Bloc countries offering cheap holidays, the recent announcement by the Maltese government that negotiations were at an advanced stage with two low cost airlines has[ Read Article]

Drug Rehab Treatment Centers as an Experience, not a Punishment

Choosing a drug rehab treatment center is a decision that calls for both negative and positive emotions. Nobody wants addiction to overtake their life to the point that rehab is the necessary step. However, the decision to go to one is something to look forward to, as it is the decision to rebui[ Read Article]

Some ways to improve your king content

There are thousands of articles, books and forum posts which showed that content is king in search engine optimization (SEO). In this article, you can find some ways that can help you improve this king content for your web site. * Content for people first, not for search engines - Some webmaste[ Read Article]

Aerosmith Just Keeps On Rockin’

For over three decades, Aerosmith have been one of rock's most revered and popular bands, crafting classic songs full of raw guitar runs and intensely energetic vocals. The band first reached fame in the 1970’s with a string of hits including "Dream On," "Sweet Emotion" and "Walk This Way." During t[ Read Article]

Chicago Cubs Pitcher Mark Prior Re-signs

After many trips through the rumor mill, Mark Prior accepted the Chicago Cubs’ offer on January 27 to a one-year, $3.65 million contract. That is $900,000 more than the salary he would have earned under the contract he voided in November. Since Prior's definitive season in 2003 (18-6), he has cooled[ Read Article]

Social Networking - The Next Great Marketing Medium?

There has been a virtual explosion of social networking sites in the past couple of years. Even the big players like Google, Yahoo and MSN are getting into it. With so much interest in how social networks work, one begins to wonder if there is marketing potential within these social network[ Read Article]

How to choose paid directory for web site listing?

How to choose paid directory for web site listing? Search Engines are the major source of traffic for any website. High search engine ranking can boost number of your visitors and in turn leads to increase in sales. The best way to get top search engine placement is to improve link popularity [ Read Article]

Addiction Treatment Centers Using Experiential Therapies

Life is experience. Substance dependence overtakes a person’s ability to make her own decisions to experience life, and life is no longer actively participated in. Therefore, in overcoming addiction, it is vital to learn to re-experience life. This lesson helps a treatment center resident reint[ Read Article]

The DH: Making Life Tough for AL Pitchers

In 1973 Major League Baseball instituted three rules designed to lessen the power of pitchers and create more offense. One theory at work was that the game needed to be energized and that more hitting would create additional runs and excitement. Both the National and American Leagues lowered th[ Read Article]

Vacation on the Beach the Smart Way

Vacation on the Beach the Smart Way Almost everyone agrees; there is no more relaxing way to vacation than to take it to the beach. For the vacationer/traveler who hasn't considered a beach house rental before, they represent an affordable and fun family oriented alternative. There is an intell[ Read Article]

Malta Holidays and Hotels Buzzed by New Jets

With Malta visitor numbers static in recent years and facing new competiton from former Eastern Bloc countries offering cheap holidays, the recent announcement by the Maltese government that negotiations were at an advanced stage with two low cost airlines has sparked hopes that the island will see [ Read Article]

The Rising Cost of Prescription Drugs

If you’re like many Americans, the rising cost of prescription drugs may be costing you your health. In particular, seniors living on a fixed income with no insurance are finding it difficult to pay for necessary prescriptions out-of-pocket, and as a result, may be failing to receive the treatment[ Read Article]

Who's Tops in Hockey and Who's Not

The National Hockey League needs to do more to encourage better coverage of the hockey games. With so many other sports realizing national coverage, the NHL is sometimes forgotten. However, this year, there's a race for the Stanley Cup, and only one is set to win it. But which team will that be? [ Read Article]

The Danger Of Rounding Up Your Debts

Rounding up your debts is one of the biggest dangers to your financial position. It's also one of the easiest ways for your debts to get out of control. This way of thinking is best summed up by the following comment; ‘I already owe $27500 so what’s another $500. It takes my debt to a nice round [ Read Article]

 

World Top Stories :
XML error: not well-formed (invalid token) at line 7