timezone or localtime setting with ubuntu

ls /usr/share/zoneinfo
ls /usr/share/zoneinfo/Asia
ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime

or

tzselect
5)Asia
23)Korea(South)
vi /home/musesoft/.profile
TZ='Asia/Seoul'; export TZ

vi /root/.profile
TZ='Asia/Seoul'; export TZ

date