# Option 3: manual removal of the REPO.list file
# Option 2: use ppa-purge to remove undesired repos while gracefully downgrade installed packages if necessary Sudo add-apt-repository -remove ppa:BAD-REPO/ppa To perform PPAs roll-backs, use one of these options: # Option 1: runt the same command with the -remove flag Reverse changes: since this repo has been added as a URL, the roll-back is simply to run the same command with the –remove switch sudo add-apt-repository -remove "deb precise partner" Next error W: GPG error: precise Release: The following signatures were invalid: 630239CC130E1A7FD81A27B140976EAF437D05B5 Gpg: key 40976EAF437D05B5: public key "Ubuntu Archive Automatic Signing Key " imported Gpg: key 40976EAF437D05B5: 59 signatures not checked due to missing keys Output Executing: /tmp/apt-key-gpghome.ilULdPGG23/gpg.1.sh -recv-keys -keyserver 40976EAF437D05B5 Manually imported the keys from Ubuntu keyserver sudo apt-key adv -recv-keys -keyserver 40976EAF437D05B5 N: See apt-secure(8) manpage for repository creation and user configuration details. N: Updating from such a repository can't be done securely, and is therefore disabled by default.
Hence, let this be a learning experience in dealing with Ubuntu repos and software signatures.Īdded the precise repo: sudo add-apt-repository "deb precise partner"Įrror: W: GPG error: precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5Į: The repository ' precise Release' is not signed.
#Ubuntu add standard notes repository install
The following is a blunder I’ve made while attempting to install Acrobat Reader on Ubuntu 19.
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