hp-ux date를 이용한 시간 변경

root@vm180   [/root]
# date
Wed Feb 26 15:34:59 KST 2014

root@vm180   [/root]
# date 02261540 2014
Wed Feb 26 15:40:00 KST 2014

root@vm180   [/root]
# date
Wed Feb 26 15:40:06 KST 2014

root@vm180   [/root]
# date 02261535 2014
date: do you really want to run time backwards?[yes/no]yes
Wed Feb 26 15:35:00 KST 2014