Webmin System Administration

Webmin is a web-based system configuration tool for Unix-like systems, providing a graphical interface for system administration tasks including user management, package installation, service configuration, and network settings. Originally developed by Jamie Cameron in 1997, Webmin is written in Perl and runs its own mini web server on port 10000, making it accessible from any web browser. Key features: web-based GUI (browser-accessible interface for system administration without SSH or command-line knowledge, with support for all major web browsers). Modular architecture (over 100 standard modules covering user and group management, disk quotas, file sharing, DNS, DHCP, Apache, Nginx, MySQL, PostgreSQL, mail services, cron, bootup configuration, and network interfaces). Usermin (companion tool providing limited web-based email and file access for regular system users). Cloudmin (commercial extension for managing multiple virtual machines and cloud instances from a single interface). Virtualmin (extension for managing virtual hosting with domain, website, email, database, and DNS management for shared hosting providers). Themable interface (customizable themes and layouts including Authentic theme for modern look). Custom commands (define custom system commands accessible from the web interface). Module development (Perl-based API for creating custom Webmin modules for application-specific administration). Configuration backup (export and import Webmin module configurations for migration and backup). Access control (Webmin users with per-module permissions, IP access control lists, and SSL/TLS encryption). Multi-server management (manage multiple servers from a single Webmin instance via Webmin Servers module). Clustering (cluster management for executing commands across multiple servers simultaneously). Supports over 100 different Unix-like operating systems including Ubuntu, Debian, CentOS, RHEL, FreeBSD, Solaris, and macOS.