Which two environment variables control all localization settings on a Linux system?

Localization on a Linux system is managed through environment variables that dictate how the system presents language and regional settings. The two most significant environment variables for controlling localization settings are LC_ALL and LANG.

LC_ALL is a special variable that takes precedence over all other locale-related variables, including LANG and any other LC_* variables. This means that if LC_ALL is set, it dictates the locale settings for all categories equally, overriding any individual settings.

LANG serves as a default value for the locale settings and specifies the language in which messages should be displayed. When LC_ALL is not set, LANG is used to determine the system's default locale.

Together, these two variables ensure comprehensive control over how the system handles localization, providing a way to manage language preferences and regional formats effectively. This is essential for making the system accessible and user-friendly for speakers of different languages and users from various geographical regions.