Mike Gossland’s Perl Tutorial Course for Windows

Chapter 5. Introduction to CGI

Introduction to CGI
First Page to Browser
Printing HTML
Serving HTML Files
Serving Edited Files

Serving HTML Files

Very often in CGI programming, you'll want to call up a particular HTML file and use it as the basis of your response. In its simplest form, this is accomplished with nothing more than sending a header, opening the file and printing it.

Try saving some text inside a page as "serving.html" in your cgi-bin directory. You could actually save it anywhere on your hard drive, but putting it in your cgi-bin directory will allow you to leave out the path to the file in the example.

Next, run this perl script:

print "Content-Type: text/html\n\n";

open HTML, "serving.html" or die $!;

while( <HTML> ) {

print;

}

close HTML;

Pretty simple, huh. You could display other files just by modifying the path. As an exercise, try serving other html files on your disk. Then try displaying a pure text file, with a header of text/html, and then with text/plain.

Now you've seen how to open and serve files, you're ready to see how to edit files on the fly and use them as templates.

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