How to add get keys for ubuntu repo in another distribution

add

deb [trusted=yes] http://archive.ubuntu.com/ubuntu trusty universe

to /etc/apt/sources.list

do apt-get update

It will complain about non existing public key. Take not of the PUB_KEY and now execute following,


apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <PUB_KEY>

This should add the key for the said repository.

Now you can execute following at it should work without any errors.

sudo apt-get update