Apache htpasswd: User Authentication for Secure Web Access

htpasswd is a command-line tool used for creating and managing user authentication files for Apache web servers. It allows administrators to create a list of usernames and passwords that can be used to restrict access to specific directories or web pages on their server. The htpasswd file is typically stored in a secure location on the server and is used by Apache to authenticate users before granting them access to protected content. The htpasswd tool can be used to add, delete, or modify user accounts in the authentication file. It is commonly used in combination with other Apache modules such as mod_auth and mod_authz to provide secure access control for web applications.