Hack 7. Set System Date and Time

by Ramesh

To change the system date use:

# date {mmddhhmiyyyy.ss}

omm – Monthodd – Dateohh – 24 hour formatomi – Minutesoyyyy – Yeaross – seconds

For example, to set system date to Jan 31st 2009, 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"