LINUX HACK 7

Chapter 2: Date Manipulation
Hack 7:
Set System Date and Time:

 
To change the system date use:
# date {mmddhhmiyyyy.ss}
o mm – Month
o dd – Date
o hh – 24 hour format
o mi – Minutes
o yyyy – Year
o ss – seconds
For example, to set system date to Jan 31st 2008, 10:19 p.m, 53 seconds
# date 013122192009.53
You can also change system date using set argument as shown below.
# date 013122192009.53
# date +%Y%m%d -s "20090131"
# date -s "01/31/2009 22:19:53"
# date -s "31 JAN 2009 22:19:53"
# date set="31 JAN 2009 22:19:53"
To set the time only:
# date +%T -s "22:19:53"
# date +%T%p -s "10:19:53PM"