How to change time zone on ubuntu – linux ?

It is very easy to change the timezone on your Ubuntu desktop or server system when using the command line. Debian-based versions of Linux, like Ubuntu, make this task as easy as reconfiguring a package via the package management system. To change the timezone on your Ubuntu system, execute the following in a terminal as root:

dpkg-reconfigure tzdata

The package tzdata should already be installed but in case it isn’t just install it by running the following command as root:

apt-get install tzdata

When reconfiguring tzdata, you will be taken to a screen where you will be required to select your general geographic location from a list as shown in the screenshot below:

from:

http://www.tutorialarena.com/blog/change-timezone-on-ubuntu-using-the-command-line.php

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