DST tip: make sure /etc/localtime is also right
Bill McGonigle
bill at bfccomputing.com
Mon Mar 12 16:39:31 EDT 2007
Curious - I found that on an FC2 box while the timezone files had
been updated last March (kicking the general preparedness out of
everything else on the planet) the /etc/localtime file existed as an
old copy of the timezone file. Oops. I'm pretty sure that wasn't
done manually.
Back in the day /etc/localtime used to always be a symlink to a
zonefile. This seem[d,s] like a good idea - does anybody know why
Fedora might have gotten away from that model? I reinstated it and
everything appears to be OK.
-Bill
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>zdump -v EDT5EST | grep 2007
EDT5EST Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EDT
isdst=0 gmtoff=-18000
EDT5EST Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EST
isdst=1 gmtoff=-14400
EDT5EST Sun Nov 4 05:59:59 2007 UTC = Sun Nov 4 01:59:59 2007 EST
isdst=1 gmtoff=-14400
EDT5EST Sun Nov 4 06:00:00 2007 UTC = Sun Nov 4 01:00:00 2007 EDT
isdst=0 gmtoff=-18000
>ls -l /usr/share/zoneinfo/EST5EDT
-rw-r--r-- 1 root root 837 Mar 21 2006 /usr/share/zoneinfo/EST5EDT
>uptime
16:13:27 up 265 days, 7:47, 1 user, load average: 0.66, 0.60, 0.48
>ls -l /etc/localtime
-rw-r--r-- 1 root root 1267 Aug 31 2005 /etc/localtime
#mv /etc/localtime /etc/localtime-old; ln -s /usr/share/zoneinfo/
EST5EDT /etc/localtime
#date
Mon Mar 12 17:16:35 EDT 2007
#ntpdate us.pool.ntp.org
Looking for host us.pool.ntp.org and service ntp
host found : enigma.wiredgoats.com
12 Mar 16:17:40 ntpdate[6552]: step time server 208.201.242.2 offset
-3549.652149 sec
(the time had been hand-corrected as an interim workaround)
-----
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