[tz] Regarding timezone upgrade from 2017c to 2018c
debananda.pal at gmail.com
Tue Mar 6 10:52:56 UTC 2018
Thank you very much Paul.
Please let me know any command to verify the timezone version and getting
output like 2017c, 2018c.
On Fri, Mar 2, 2018 at 11:16 PM, Paul Eggert <eggert at cs.ucla.edu> wrote:
> On 03/02/2018 05:16 AM, Debananda Pal wrote:
>> While upgrading to 2018c timezone, I found below changes :
>> ./etc/localtime ./etc/localtime ==> Newly added
>> ./etc/zoneinfo/localtime -> GMT ==> This entry is removed
>> ./etc/zoneinfo/GMT ./etc/zoneinfo/GMT ==> Changed to ==>
>> ./etc/zoneinfo/GMT link ./etc/localtime
> Most likely you're observing effects of the change that was proposed here:
> If by "." you mean the root of the destination directory, then yes, the
> link that used to be in ./etc/zoneinfo/localtime is now in ./etc/localtime
> by default. This is a link to the GMT file (a file that used to be in
> ./etc/zoneinfo/GMT and is now in ./usr/share/zoneinfo/GMT). You can restore
> the old behavior by setting the appropriate Makefile macro.
> ./etc/zoneinfo/US/Pacific-New -> ../America/Los_Angeles ==> This entry is
> Yes, that's a consequence of the change proposed here:
> ./etc/zoneinfo/Africa/Sao_Tome -> ../Atlantic/St_Helena ==> Changed to
>> ==> ./etc/zoneinfo/Africa/Sao_Tome ./etc/zoneinfo/Africa/Sao_Tome
> Yes, São Tomé and Príncipe got its own Zone, due to the change proposed
> In general, if you are curious about changes like this, it's a good idea
> to clone the git repository here:
> You can then use commands like "git blame" to find out when things changed
> and why. For example, if you're curious about Africa/Sao_Tome, the command
> "git blame africa" outputs the the following lines, which identify the IDs
> and dates of the most-recent revisions affecting lines in Africa/Sao_Tome
> (there have been three so far this year, as it happens):
> 2951fa3b (Paul Eggert 2018-01-08 09:03:13 -0800 1068) Zone
> Africa/Sao_Tome 0:26:56 - LMT 1884
> fff7816c (Paul Eggert 2018-02-16 16:11:42 -0800 1069) -0:36:45
> - LMT 1912 Jan 1 00:00u # Lisbon MT
> a4272fbf (Paul Eggert 2018-01-08 16:12:21 -0800 1070) 0:00
> - GMT 2018 Jan 1 01:00
> 2951fa3b (Paul Eggert 2018-01-08 09:03:13 -0800 1071) 1:00
> - WAT
> You can then issue commands like "git log 2951fa3b^!" and "git log
> 2951fa3b^!" to find more details about each of the three changes.
> Come to think of it, something like the above should be in the file
> CONTRIBUTING. Proposed patch attached.
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