![Errors when running `apt update`. W: NO PUB_KEY and W:Target package is configured multiple times [duplicate]](https://track.liberty.io/uploads/errors-when-running-apt-update-w-no-pub-key-and-w-target-package-is-configured-multiple-times-duplicate_720.jpg)
When I try to update my system with sudo apt-get update, I receive the following:
Hit:1 focal-security InRelease Hit:2 focal InRelease Get:3 linux InRelease [4808 B] Hit:4 focal-updates InRelease Hit:5 focal-backports InRelease Err:3 linux InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F716E939977FC428 Reading package lists... Done W: GPG error: linux InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F716E939977FC428 E: The repository ' linux InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 How can I fix this and update my system?
EDIT
Now, I am getting:
root@PYAMMANO-68J9Z:/# echo "deb linux main" | sudo tee -a /etc/apt/sources.list deb linux main root@PYAMMANO-68J9Z:/# curl -fsSL | gpg --dearmor | sudo tee /usr/share/keyrings/scaleft-archive-keyring.gpg > /dev/null root@PYAMMANO-68J9Z:/# apt -f install Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 95 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up scaleft-server-tools (1.56.1) ... System has not been booted with systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is down dpkg: error processing package scaleft-server-tools (--configure): installed scaleft-server-tools package post-installation script subprocess returned error exit status 1 Errors were encountered while processing: scaleft-server-tools W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:51 W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:52 W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:52 W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:52 W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:52 W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list:52 W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list.d/scaleft.list:1 W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list.d/scaleft.list:1 W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list.d/scaleft.list:1 W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list.d/scaleft.list:1 W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:50 and /etc/apt/sources.list.d/scaleft.list:1 E: Sub-process /usr/bin/dpkg returned an error code (1) 2 Answers
There are three errors in your system.
First, one of your repositories is not signed and requires a GPG key.
Secondly, your
sources.listhas duplicate sources.Third, your system has a corrupted package.
Adding the proper signatures.
Run the following command in a terminal:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F716E939977FC428Update:
sudo apt update
Fixing the duplicate entries.
Install the
Y-PPA-MANAGER:sudo add-apt-repository ppa:webupd8team/y-ppa-manager sudo apt upgrade sudo apt install y-ppa-managerOpen the
Y-PPA-MANAGER:sudo y-ppa-manager
Navigate to Advanced → Scan and remove duplicate PPAs.
Let it complete and run:
sudo apt update
To fix the corrupted package:
First, update the repositories:
sudo apt updateNow, run:
sudo apt download runit-systemd && sudo dpkg -i --force-all ./*.debRun force install:
sudo apt -f installThis will also install the package you wanted to install i.e
scaleft-server-tools.
If you want you can purge reinstall the package. By running:
sudo dpkg -P scaleft-server-tools --force-all && sudo apt install scaleft-server-tools Alternatively, you can manually edit the post-installation files for the package scaleft-server-tools and replace the systemctl command with the service command and run sudo apt -f install. Reboot to confirm all the changes.
That's it!
Good Luck!
EDIT
For problem #3 i.e Corrupted package.
In the documentation, I found that for Ubuntu 20.04 Focal or above, you need to explicitly allow certificate authorities (CAs) to use the ssh-rsa algorithm to sign certificates.
To do this, you need to add the following line to your OpenSSH daemon file (which is either /etc/ssh/sshd_config or a drop-in file under /etc/ssh/sshd_config.d/):
CASignatureAlgorithms +ssh-rsa Following the instructions on Okta.com (formatting, my own):
2.Trust the repository signing key:
curl -fsSL | gpg --dearmor | sudo tee /usr/share/keyrings/scaleft-archive-keyring.gpg > /dev/null
after you've installed the certificate, you might need to apt -f install to fix any installation you've tried to do already, but then hopefully everything else will install happily.
