Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm creating a LiveCD from this guide and came across a line I do not understand:

sudo apt-key adv --keyserver --recv-keys 12345678 
#Substitute "12345678" with the PPA's OpenPGP ID.

wondered if anyone can explain what should I substitue 12345678 with and how to obtain it

share|improve this question

The information is listed on the ppa page in launchpad

Sample screenshot :

enter image description here

So , using the above as an example

sudo apt-key adv --keyserver --recv-keys A9E345C0

See PPA FAQ and Ubuntu wiki secure apt for details

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.