.htaccess (Hypertext Access) is the default name of Apache's directory-level configuration file. It provides the ability to customize configuration directives defined in the main configuration file. The configuration directives need to be in .htaccess context and the user needs appropriate permissions.
Directory rules
The user permissions for .htaccess are controlled on server level with the AllowOverride directive which is documented in the Apache Server Documentation.
Other usesRewrite engine
Sun Java System Web Server
Apache HTTP Server
Configuration file
