timezone issue on ubuntu

ubuntu system will set bios time as default UTC time. therefore, the system time will be set to +8 in taiwan. which means BIOS maintains the correct localtime but it goes faster 8 hours in ubuntu system.

modify /etc/defaults/rcS

- UTC = yes
+ UTC = no

and link localtime to correct position

$ sudo ln -sf /usr/share/zoneinfo/Asia/Taipei /etc/localtime

done