Practical guides for Unix and Linux professionals. Server setup, security hardening, BSD tutorials, VPS comparisons, and CLI tools - built for sysadmins and DevOps engineers since 2001.
Est. 2001From BSD fundamentals to modern cloud infrastructure. Everything a sysadmin or DevOps engineer needs, tested on real systems.
Browser-based utilities for everyday sysadmin tasks. No login, no tracking.
The operating system that shaped modern computing is still shaping it. macOS runs on a Unix core. FreeBSD powers Netflix, PlayStation, and WhatsApp infrastructure. OpenBSD remains the gold standard in security. Every iPhone, every Mac, every Sony PlayStation runs Unix underneath.
As cloud infrastructure, DevOps, and security engineering continue to grow, Unix knowledge remains one of the most valuable skills in the industry. The fundamentals don't change - they compound.
Apple's entire ecosystem runs on Darwin, a certified Unix OS. Over 2 billion active devices worldwide.
Powers Netflix CDN, PlayStation 3/4/5, WhatsApp servers. The invisible backbone of modern internet.
The most secure general-purpose OS. Preferred by security researchers, government agencies, and network engineers.
IBM AIX and Oracle Solaris continue to run mission-critical systems in banking, telecoms, and defence.