Undo command

[betty3]

Can anyone help me undo these commands and explain me what they do:

wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -

sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" >> /etc/apt/sources.list.d/postgresql.list'

[steeldriver]

AFAIK all that they do is prepare your system's package management system to install packages from www.postgresql.org - as long as you didn't go any further than that, you can undo them by editing the added line out of your /etc/apt/sources.list file and using 'apt-key del' to remove the added key.

[betty3]

how do I use the apt-key del ? do I repeat the code like this? :

wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key del -

[steeldriver]

No, afaik you will need to run

apt-key list

and look for the lines like

pub   4096R/ACCC4CF8 2011-10-13 [expires: 2019-07-02]
uid                  PostgreSQL Debian Repository

then you can do

sudo apt-key del ACCC4CF8

You can check it's really gone by running 'apt-key list' a second time.

[In this case you could have got the key-id from the ACCC4CF8.asc filename but I don't think that will always necessarily be the case.]

[betty3]

thanks although I had nothing on the list that was related to PostgreSQL. I had already erased the line in the sources.list file and then I listed the trusted keys but found nothing, so maybe is not there anymore, and maybe it was never there. Did you try it yourself?

[steeldriver]

yes I added and then removed it just to make sure I posted the right syntax

[betty3]

thanks