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Summary: The Apache Web Server
Apache is a powerful web server which serves html/css/cgi/pl out of the box, and can serve other languages/frameworks via extensions.
The Apache Homepage says this of Apache:
The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows NT. The goal of this project is to provide a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards.
Configure USE Flags
If you want to enable any of the above use flags, create a file called /etc/portage/package.use/apache and add the options that you want to enable to it. For example:
After you have configured the USE flags that you want to build Apache with, emerge it:
# emerge apache
Many packages have apache2 use flags. These use flags are often required for an application to be supported by Apache. Setting a system wide apache2 use flag is a good idea.
Apache's configuration files are broken up and located in several spots.
conf.d controls the init script, adding things to it such as -D SECURITY & -D PHP5 will enable web application fire-walling & the php scripting language.
httpd.conf controls how the server behaves, at the bottom of the file it has directives to include configuration files ending in .conf in
To start apache immediately:
# rc-service apache2 start
To start apache upon boot:
# rc-update add apache2
The Apache documentation describes
The mod_rewrite module uses a rule-based rewriting engine, based on a PCRE regular-expression parser, to rewrite requested URLs on the fly. By default, mod_rewrite maps a URL to a filesystem path. However, it can also be used to redirect one URL to another URL, or to invoke an internal proxy fetch.
Setting it up
mod_rewrite has a reputation of being difficult to set up. mod_rewrite requires following symlinks & Order allow,deny (apache 2.2) or Require all granted (apache 2.4) is set. To test functionality of mod_rewrite we will need to make a few files.
If you want to test this for web applications such as mediawiki adjust the path to
Then point your browser to http://127.0.0.1/test.html. You should see that the text from rewrite.html has been loaded.