language settings LANG export

run as root

localedef -i en_US -f UTF-8 en_US.UTF-8
localedef -i en_GB -f UTF-8 en_GB.UTF-8

LANG=en_US.UTF-8

This is the default setting if English is selected during
installation. If you selected another language, that language is
enabled but still with UTF-8 as the character encoding.

Users can override the system defaults by editing their ~/.bashrc
accordingly. For instance, if you do not want to use the systemwide
en_US for program messages, include LC_MESSAGES=es_ES so messages are
displayed in Spanish instead.

http://www-uxsup.csx.cam.ac.uk/pub/doc/suse/suse9.3/suselinux-adminguide_en/sec.suse.l10n.html