Apache · December 17, 2023

Apache Command: httpd -L

Apache Command: httpd -L

Apache HTTP Server, commonly referred to as Apache, is a widely used open-source web server software. It is known for its flexibility, stability, and security. Apache offers a plethora of commands and options to configure and manage the server. One such command is httpd -L, which provides a comprehensive list of available modules and directives.

Understanding the httpd -L Command

The httpd -L command is used to display a detailed list of all the modules and directives that are compiled into the Apache server. This command is particularly useful when you want to explore the available options and understand the capabilities of your Apache installation.

When you execute the httpd -L command, it will display a long list of modules and directives along with their descriptions. This information can help you in various ways, such as:

  • Identifying the modules that are enabled or disabled in your Apache installation.
  • Exploring the functionalities provided by different modules.
  • Understanding the available directives and their purposes.
  • Checking for any custom modules or directives that might have been added.

Examples of httpd -L Output

Let's take a look at some examples of the output you might see when running the httpd -L command:

core.c
  - Core Apache HTTP Server features that are always available.

mod_ssl.c
  - Provides support for SSL/TLS encryption.

mod_rewrite.c
  - Allows URL rewriting for search engine optimization or redirection purposes.

mod_proxy.c
  - Enables Apache to act as a proxy server.

mod_expires.c
  - Adds expiration headers to HTTP responses to improve caching.

...

As you can see, each module or directive is accompanied by a brief description of its functionality. This information can be invaluable when configuring your Apache server or troubleshooting any issues.

Conclusion

The httpd -L command is a powerful tool for exploring the modules and directives available in your Apache installation. By providing a comprehensive list with descriptions, it helps you understand the capabilities of your server and make informed decisions when configuring or troubleshooting Apache.

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