> The simpelest way I know of is to install xntp 

rdate is even simpler. :) 

I just do 'rdate -s time.nist.gov'
then do 'hwclock -w' (or 'clock -w' will work on redhat) to set the hardware
clock to the software time.

by the look of things, it may not be as accurate as ntpdate or xntpd; but if
a few seconds is close enough for you; it's probably good enough. :)

I used to just have a cron job that ran once a week, and used rdate and
clock to set the system clock against time.nist.gov. it's really not the
best thing if your system clock 'drifts' pretty badly, tho. some programs
don't react well to having the system time changed out from under them.

for a production environment, with many machines working in close
synchronization with each other (logging to a common loghost, for instance);
xntpd is definitely the way to go.

Carl Soderstrom.
-- 
Network Engineer
Real-Time Enterprises
(952) 943-8700