So you just got your new hosted server from your german provider, they send you the credentials to get in and when you log in it says.... Guten Tag !
Oops, let's teach this machine how to speak english (or any other language, of course).
Changing the system language on a Debian box is a very easy and fast operation.
Two steps:
- Reconfigure the locales generated on the system
Just type:dpkg-reconfigure locales