topic Re: reset system time in Operating System - Linux

reset system time

juno2 — Fri, 16 May 2003 09:45:50 GMT

How to change the system time ( RH 8 ) ? thx

Re: reset system time

Jerome Henry — Fri, 16 May 2003 10:02:27 GMT

3 solutions :
- In a shell, run 'redhat-config-date' command
- From your desk, run 'hat menu / systems settings / change date & time' (it may not be exactly these words, I'm running a french version and am a poor translator. Hat menu is bottom left red hat).
- Change it from your BIOS at boot time (not elegant).
Hope this helps.
J

Re: reset system time

Balaji N — Fri, 16 May 2003 11:20:38 GMT

just to add, if your hardware clock time is correct, just sync it with your system clock.

hwclock --hctosys

or vice versa with

hwclock --systohc

man hwclock.

-balaji (couldnt resist replying because am fiddling with it for the past few days)

Re: reset system time

juno2 — Fri, 16 May 2003 12:47:46 GMT

Thx all's reply,

I have the following problem ,
the command "redhat-config-date" can't be run, can't access xwindows, the hardware clock is also not correct .
my question:
1. how can i change the hardware clock w/o reboot the system?
2. how to change the system clcok on the shell ( not sync with hardware clock ? thx.

Re: reset system time

Michael Creutz — Sat, 17 May 2003 19:58:47 GMT

from man hwclock:

--set --date="9/22/96 16:45:05"

then do a hwclock --hctosys

Mike

Re: reset system time

Steven E. Protter — Sun, 18 May 2003 02:46:44 GMT

I you really want to solve your problem for good.

Get your time off the internet.

the configuration file /etc/ntp.conf

I'm including a url that will help you pick a time source.

Once ntp.conf is configured
chkconfig xntpd on
service xntpd start

Links:
http://www.ntp.org/
http://www.ntp.org/documentation.html

This requires port 123 to be open on the firewall or in iptables/ipchains, depending on which firewall you're using.

SEP