How can I set English as a default language in Debian ? I've installed Debian in a different language.

$ sudo update-locale LANG=en_US.UTF-8 LANGUAGE=en_US  
update-locale: Error: invalid locale settings:  LANGUAGE=en_US LANG=en_US.UTF-8

Using sudo dpkg-reconfigure locales should work.

  • By that, English has become a default language. – user121832 Aug 21 '15 at 2:48

Can you start with the output of env | grep LANG? Make sure those all point to the proper lang/country, then do the dpkg command as mentioned by @vlp


check the language environment variable, that is LC_LANG. An easier way is to set the LC_ALL or LC_* variable to the English utf8.

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