In Ubuntu 14.04, how do you change network settings at the command line when they were set in the GUI System Settings?

We have an Ubuntu server setup in a remote location awhile ago, with GUI packages. The System Settings via the GUI were used to setup the network config.  It's currently at version 14.04 LTS. There is ssh access to the remote server.

In particular, we're looking to update the DNS client settings. Where does Ubuntu 14.04 store these settings that were created via the GUI System settings?  They're not in /etc/resolv.conf  nor /etc/resolvconf/resolv.conf.d head/base/tail files nor /etc/network/interfaces nor other typical config files when the system is setup without the GUI packages.

Is the only option to use a remote version of Unity .... or just get someone on-site and remedy this thru the GUI?
Hank LieuranceAsked:
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Zephyr ICTCloud ArchitectCommented:
Hi, you probably won't find the settings in the usual place if the Network Manager was used to configure the network settings of the server.

In order to be able to configure network settings through cli you'd first need to disable or remove the Network Manager (package).

Ubuntu has a good help page about it here

Of course, that's not without risks if you're working remotely, make sure you don't bring the server offline while changing settings.

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Hank LieuranceAuthor Commented:
Thanks for the info.  That confirms what our experience has been.
Zephyr ICTCloud ArchitectCommented:
Great, thanks!
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