gistfile1.txt

$ sudo dpkg-reconfigure  tzdata                                              
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76.)
debconf: falling back to frontend: Readline
Configuring tzdata
------------------

Please select the geographic area in which you live. Subsequent configuration questions will narrow this down by presenting a list of cities, representing the time zones in which they are 
located.

  1. Africa   3. Antarctica  5. Arctic Ocean  7. Atlantic Ocean  9. Indian Ocean    11. System V timezones  13. None of the above
  2. America  4. Australia   6. Asia          8. Europe          10. Pacific Ocean  12. US

Geographic area: 13


Please select the city or region corresponding to your time zone.

  1. GMT    4. GMT+10  7. GMT+2  10. GMT+5  13. GMT+8  16. GMT-1   19. GMT-12  22. GMT-2  25. GMT-5  28. GMT-8  31. Greenwich  34. Universal
  2. GMT+0  5. GMT+11  8. GMT+3  11. GMT+6  14. GMT+9  17. GMT-10  20. GMT-13  23. GMT-3  26. GMT-6  29. GMT-9  32. UCT        35. Zulu
  3. GMT+1  6. GMT+12  9. GMT+4  12. GMT+7  15. GMT-0  18. GMT-11  21. GMT-14  24. GMT-4  27. GMT-7  30. GMT0   33. UTC

Time zone: 33



Current default time zone: 'Etc/UTC'
Local time is now:      Mon Oct 24 05:49:09 UCT 2016.
Universal Time is now:  Mon Oct 24 05:49:09 UTC 2016.


$ echo Etc/GMT-14 | sudo tee /etc/timezone      
Etc/GMT-14

$ echo "tzdata tzdata/Areas select Etc" | sudo debconf-set-selections        

$ echo "tzdata tzdata/Zones/Etc select GMT-14" | sudo debconf-set-selections 

$ debconf-get-selections | grep tzdata                                       

debconf: DbDriver "passwords" warning: could not open /var/cache/debconf/passwords.dat: Permission denied
tzdata	tzdata/Zones/	select	
tzdata	tzdata/Zones/Antarctica	select	
tzdata	tzdata/Zones/Arctic	select	
tzdata	tzdata/Zones/America	select	
tzdata	tzdata/Zones/Atlantic	select	
tzdata	tzdata/Zones/Etc	select	GMT-14
tzdata	tzdata/Zones/SystemV	select	
tzdata	tzdata/Zones/Asia	select	
tzdata	tzdata/Zones/Australia	select	
tzdata	tzdata/Zones/Indian	select	
tzdata	tzdata/Zones/Africa	select	
tzdata	tzdata/Zones/US	select	
tzdata	tzdata/Zones/Pacific	select	
tzdata	tzdata/Areas	select	Etc
tzdata	tzdata/Zones/Europe	select	

$ sudo dpkg-reconfigure -f noninteractive tzdata

Current default time zone: 'Etc/UTC'
Local time is now:      Mon Oct 24 05:49:36 UCT 2016.
Universal Time is now:  Mon Oct 24 05:49:36 UTC 2016.