# Become superuser with full login environment su -
The (short for "substitute user" or "superuser") is a core utility in Unix-like operating systems, including Linux and Android, that serves as a gateway for privilege escalation . Its primary function is to allow a user to execute commands with the privileges of another user, most commonly the root user (UID 0), who has unrestricted access to the entire system. The Role of Su in Android Rooting su binary
: Root management tools like Magisk use "systemless" rooting and hiding features (like Zygisk) to mask the su binary from apps, allowing rooted users to still use apps that normally block root access. Security Risks # Become superuser with full login environment su