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Common Gateway Interface (CGI) : Abstract

Common Gateway Interface (CGI) Introduction :

*CGI is a standard mechanism for:

-Associating URLs with programs that can be run by a web server.
-A protocol (of sorts) for how the request is passed to the external program.
-How the external program sends the response to the client.

Common Gateway Interface (CGI) URLs :

*There is some mapping between URLs and CGI programs provided by a web sever.

*The exact mapping is not standardized (web server admin can set it up).

*Typically:

-requests that start with /CGI-BIN/ , /cgi-bin/ or /cgi/, etc. refer to CGI programs (not to static documents).

Common Gateway Interface (CGI) Request to CGI Program :

*The web server sets some environment variables with information about the request.

*The web server fork()s and the child process exec()s the CGI program.

*The CGI program gets information about the request from environment variables.

DO YOU KNOW :

What are Student Online Credit Cards ?

Student Credit Cards are just like normal Student Credit Cards but help students as many are poor as it helps in case of emergencies even to learn their responsibility to deal in real world.

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