Timezone change in Fedora

andrewm659 · 08-13-2014, 09:23 AM

I'm trying to figure out how to use chronyc in fedora 20. I'm new to this and done some searching but can't seem to come up with a definitive answer. How do you change the timezone from the CLI? Is it similar to doing NTP?

Thanks!

bigrigdriver · 08-14-2014, 01:32 PM

How to set your timezone in several GNU/Linux distros (Red Hat based, Debian based, etc.).

NTP is used with a network connection which is always up, and chronyc/chronyd are used for intermittent network connections to keep the system clock synchronized with an attomic clock.

sundialsvcs · 08-14-2014, 01:40 PM

Actually, the strategy used by Linux/Unix is comparatively simple:

The hardware clock is normally set to "UTC (GMT)," and kept there by a time-server linked to NTP.
The /etc/localtime file is a symbolic link to a time-zone information file, located elsewhere, which corresponds to "the local time." This symbolic-link, therefore, is very easily changed.
As you can see, the system's master-clock value is never ambiguous and does not change. What can change, courtesy of the time-zone file, is the present interpretation of it. All other possible interpretations of that same time-value, throughout the world, are therefore "equally at-hand," and will always correspond.
Time-zone files also take care of things like "daylight-savings (sun ...) time, or not."

Doug G · 08-14-2014, 09:22 PM

You can use tzselect and hwclock from the command line