add locale to ubuntu

locale.sh

# error message when connected via ssh to virtual host
Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LANG = "de_CH.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

# add locale
sudo locale-gen de_CH.UTF-8

# list locales
locale -a