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| CGI
Environment Variables
Environment Variables is a set of pre-defined values use to communicate between servers and clients over the internet. Those values are resident on HTTP header, so two machines would know who are they talking with, and where, how to communicate etc. Programmers may use those variables to retrieve client's information. |
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| Environment Variable | Description | |||||
|---|---|---|---|---|---|---|
| AUTH_TYPE | The authentication method used to validate a user.
(none) |
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| CONTENT_LENGTH | Indicates the number of bytes of form or query date received.
(none) |
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| CONTENT_TYPE | The media type of the query data, such as "text/html"
(none) |
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| DOCUMENT_ROOT | The directory from which Web documents are served.
/web/sites/us/members/htdocs |
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| GATEWAY_INTERFACE | The revision of the Common Gateway Interface that the server
uses.
CGI/1.1 |
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| HTTP_ACCEPT | A list of the media types that client can accept.
*/* |
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| HTTP_FROM | The email address of the user making the query.
(none) |
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| HTTP_REFERER | The URL of the document that the client points to before accessing
the CGI program.
(none) |
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| HTTP_USER_AGENT | The browser the client is using to issue the request.
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) |
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| PATH_INFO | Additional path information appended to the CGI script.
(none) |
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| PATH_TRANSLATED | The translated version of the path given by the variable PATH_INFO.
(none) |
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| QUERY_STRING | Contains and query information submitted by the user as a result of
a GET-method
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| REMOTE_ADDR | The host address of the computer running the Web browser.
209.202.244.9 |
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| REMOTE_HOST | The host name of the computer running the Web browser.
(none) |
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| REMOTE_IDENT | The user making the request.
(none) |
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| REMOTE_USER | Contains the userid of the person using the WWW browser
- |
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| REMOTE_METHOD | The method used to call the script (usually GET or PORT)
(none) |
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| SCRIPT_NAME | The virual path of the script being executed.
/env_var.html |
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| SERVER_NAME | THe host name of the computer on which the server is running.
darrencgi.tripod.com |
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| SERVER_PORT | Indicates the port number on which the server is listening of HTTP
connections (default is 80).
80 |
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| SERVER_PROTOCOL | Indicates the protocol in use.
HTTP/1.1 |
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| SERVER_SOFTWARE | Tells the name and version of HTTP server you are running.
Squeegit/1.2.5 (3_sir) |
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