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Submitted by:
lebjf000 |
coolcommand
how to prepare older Linux systems for 2007 DST change |
Description
To prepare older Linux systems for 2007 DST change:
1) Download and install the latest tzdata rpm:
Example for RHEL4:
# rpm –u tzdata-2006m-3.el4.noarch.rpm
2) In order for the change to be effective, you need to copy over the /etc/localtime
# zdump -v /etc/localtime | grep 2007
/etc/localtime Sun Apr 1 06:59:59 2007 UTC = Sun Apr 1 01:59:59 2007 EST isdst=0 gmtoff=-18000
/etc/localtime Sun Apr 1 07:00:00 2007 UTC = Sun Apr 1 03:00:00 2007 EDT isdst=1 gmtoff=-14400
/etc/localtime Sun Oct 28 05:59:59 2007 UTC = Sun Oct 28 01:59:59 2007 EDT isdst=1 gmtoff=-14400
/etc/localtime Sun Oct 28 06:00:00 2007 UTC = Sun Oct 28 01:00:00 2007 EST isdst=0 gmtoff=-18000
# cp /usr/share/zoneinfo/America/New_York /etc/localtime
# zdump -v /etc/localtime | grep 2007
/etc/localtime Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EST isdst=0 gmtoff=-18000
/etc/localtime Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EDT isdst=1 gmtoff=-14400
/etc/localtime Sun Nov 4 05:59:59 2007 UTC = Sun Nov 4 01:59:59 2007 EDT isdst=1 gmtoff=-14400
/etc/localtime Sun Nov 4 06:00:00 2007 UTC = Sun Nov 4 01:00:00 2007 EST isdst=0 gmtoff=-18000
Also search you system for any application have their own copy of localtime and update those if needed:
# find / -name localtime -ls
OR
To be safe, simply reboot your server and this will ensure all applications will use the DST changes. |
Example
rpm –u tzdata-2006m-3.el4.noarch.rpm; reboot |
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Sunday May 19, 2013
