[asterisk-users] Fix for TZ values updates for DST

[Tzafrir Cohen]

On Sun, Mar 11, 2007 at 10:37:13AM -0500, Darrick Hartman wrote:
> Until the new timezone data files are updated, you can correct the time 
> on your system by using the following:
> 
> Using Central Time Zone (US) as an example, in rc.conf replace
> 
> TZ=CST6CDT
> with
> TZ=CST+6CDT,M3.2.0/2,M11.1.0/2
> 
> EST5EDT would become
> EST+5EDT,M3.2.0/2,M11.1.0/2
> 
> This is better explained here:
> http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html
> 
> After making the change, the easiest thing to do is reboot.  That will 
> re-create the /etc/TZ file (well actually /tmp/etc/TZ) on your system.

This seems to be rather specific to astlinux, or maybe more generally to
systems based on uclibc.

For standard glibc-based systems, the quick&dirty fix is to grab
/etc/localtime from an up-to-date system in the same timezone and copy
it to /etc/localtime .

I was once told that the format of the binary timezone files is quite
compatible accross different unix systems. Is that indeed the case? Can
I freely copy them around from one system to another?

-- 
               Tzafrir Cohen       
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