linux date command
date is rather a useful command to encode or decode timestamp from epoch or human readable date.
But actually, the
-s option will not change linux time from
CMOS level, linux time will follow what
CMOS tick tock.
There is another command to modify linux time from
hwclock --set --date="2011-08-14 16:45:05"
It will surely set hardware clock as
13 March 2014