You can get or set the locale settings in a linux environment (tried in fedora) by using the command :
localectl
You can remember it as Locale Control
You can also get more locale information by simply executing the command:
locale
To learn all the possible locale languages type this in terminal:
locale -a
To set locale (to change locale language setting), you can do something like this example:
localectl set-locale LANG=fr_FR.utf8
Also to temporarily to execute any command in a different language, prefix the command with the LANG=<appropriate languagr> <command>. For example:
LANG=fr_FR.utf8 date
To learn more about locale always take help of documentations.