DevOps & SysAdmin
Calculators, configuration builders, and validators for Linux, Docker, Nginx, and cloud operations. All tools are free to use directly in your browser with zero registration.
Linux CHMOD Calculator
Calculate Linux file permissions with interactive read, write, execute checkboxes, octal numbers (755, 644), and chmod commands.
Cron Expression Generator & Explainer
Build and explain standard 5-field cron schedules with human-readable descriptions and next 5 run-time previews.
Docker Compose YAML Validator
Validate Docker Compose manifests, inspect services, volumes, networks, and environment syntax rules.
Nginx Configuration Helper
Generate secure, optimized Nginx server block configurations for reverse proxies, static sites, PHP-FPM, and SSL redirects.
Apache .htaccess Generator
Generate Apache .htaccess rules for HTTPS redirection, custom 404 pages, gzip caching, and security headers.
PHP Extensions & Requirements Checker
Scan and compare installed PHP extensions against requirements for WordPress, Laravel, Symfony, Drupal, and Nextcloud.