“People all over the world use Linux in dozens of languages.
Since Linux’s source code is free and open, speakers of minority
languages can add support for their languages themselves, even
though a large corporation might not consider them a worthwhile
market. If you use more than one language, or a language other than
English, you should know about Linux’s use of locales to support
different languages. Indeed, understanding locales can be useful
even if you only use English.
“You choose your locale by setting environment variables.
Different variables control different things…”
CLI Magic: Environmental Issues(Dec 14, 2004)