date –set=“23 June 1988 10:00:00” date –set=“10:00:00”

# hwclock –systohc Set the System Time from the Hardware Clock.

# hwclock –hctosys

sudo service ntp stop sudo ntpd -gq sudo service ntp start

or

ntpdate ntp.ubuntu.com

參考

• http://superuser.com/questions/302396/how-to-set-current-time-on-linux
• http://askubuntu.com/questions/254826/how-to-force-a-clock-update-using-ntp
• http://superuser.com/questions/181341/how-to-check-if-ntp-adjusted-system-time-on-linux