Home
Module Guides
Variables
Directives

Variable Reference

$sysguard_free

— NGINX sysguard module

$sysguard_free NGINX sysguard module

← Back to all variables

The definitive educational reference for NGINX — module guides, variable reference, and real-world patterns.

Learn

Getting Started
Variables
Modules
Directives

Modules

Array-typed variables for NGINX
HTTP Concatenation module for NGINX
NGINX form input module
IP address anonymizer module for NGINX

Resources

GetPageSpeed RPM
NGINX Official
GitHub

© 2026 nginx101.comJSON-LD · FAQPage · TechArticle