I'm trying to update the git version on a Debian 10 (buster) machine and running into issues with gpg key.
> sudo add-apt-repository ppa:git-core/ppa
The most current stable version of Git for Ubuntu.
For release candidates, go to https://launchpad.net/~git-core/+archive/candidate .
More info: https://launchpad.net/~git-core/+archive/ubuntu/ppa
Press [ENTER] to continue or ctrl-c to cancel adding it
gpg: keybox '/tmp/tmpfqaimru3/pubring.gpg' created
gpg: /tmp/tmpfqaimru3/trustdb.gpg: trustdb created
gpg: key A1715D88E1DF1F24: public key "Launchpad PPA for Ubuntu Git Maintainers" imported
gpg: Total number processed: 1
gpg: imported: 1
gpg: no valid OpenPGP data found.
I also tried to manually add key, but still end up with same error after adding the key successfully.
> sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A1715D88E1DF1F24
Executing: /tmp/apt-key-gpghome.pwYjc1J0zy/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys A1715D88E1DF1F24
gpg: key A1715D88E1DF1F24: public key "Launchpad PPA for Ubuntu Git Maintainers" imported
gpg: Total number processed: 1
gpg: imported: 1
And also:
> gpg --export A1715D88E1DF1F24 | sudo apt-key add -
gpg: WARNING: nothing exported
gpg: no valid OpenPGP data found.
Not sure what I'm doing wrong. I've also done update a few times.
> sudo apt-get update
I tried this in a docker container and
sudo add-apt-repository ppa:git-core/ppa
doesn't work there as well. But
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A1715D88E1DF1F24
sudo gpg --export A1715D88E1DF1F24 | sudo apt-key add -
works.
note that the only difference to your command is, that i am invoking the gpg --export command with sudo.
The explanation for this behaviour is, that
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A1715D88E1DF1F24
imports the key into the keyring of root. So if you invoke the command without sudo gpg cant find the key you've imported.