What is MIME type "text/x-rexx"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

text/x-rexx is a MIME type for files containing Rexx source code. It signals to programs that the content is plain text with scripting commands.

This type is used primarily for automation and system tasks. Software that understands text/x-rexx can apply syntax highlighting or run the code directly.

Typical files include source code with extensions such as:

Main use cases:

Running scripts for system automation.
Handling text processing and file tasks.
Implementing system administration routines.
Serving as the source for programs that integrate Rexx with other tools.

For more details on Rexx and its applications, check out Rexx on Wikipedia.

Associated file extensions

.rex, .rx, .rexx, .arexx

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: text/x-rexx

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="text/x-rexx">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');    
    
    http.createServer((req, res) => {    
      res.setHeader('Content-Type', 'text/x-rexx');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.rex, .rx, .rexx, .arexx

FAQs

What is the text/x-rexx MIME type used for?

text/x-rexx identifies files containing source code written in the Rexx programming language. It tells operating systems and servers that the file is plain text but should be treated as a script for automation or system processing.

How do I open a file with the text/x-rexx content type?

You can view and edit the code using any standard text editor like Notepad++, Visual Studio Code, or Sublime Text. To actually execute the script, you will need a Rexx interpreter installed, such as Regina Rexx or Open Object Rexx (ooRexx).

Why does this MIME type start with 'x-'?

The x- prefix indicates that text/x-rexx is a non-standard or experimental subtype that has not been officially registered with the IANA. However, it is the de facto standard used by developers and servers to identify .rex and .rexx files.

How do I configure Apache to serve Rexx files correctly?

You can associate the MIME type with the correct extensions by adding a directive to your .htaccess or httpd.conf file. Use the line: AddType text/x-rexx .rex .rexx .rx to ensure browsers and clients recognize the file type.

Can web browsers execute text/x-rexx scripts?

No, web browsers do not have built-in engines to run Rexx code like they do for JavaScript. If you navigate to a file served as text/x-rexx, the browser will typically display it as plain text or prompt you to download the file.

Are files with the text/x-rexx MIME type dangerous?

As with any executable script, text/x-rexx files can perform system operations that may be harmful if the source is untrusted. While safe to view in a text editor, you should never run a .rex file unless you verify its contents and origin.

How do I add text/x-rexx support to Nginx?

To configure Nginx, open your mime.types file (usually located in /etc/nginx/). Add the line text/x-rexx rex rexx rx; inside the types block and reload the server configuration.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.