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- apt - How do I fix the GPG error NO_PUBKEY? - Ask Ubuntu
sudo gpg -a --export <PUBKEY> | sudo apt-key add - sudo apt-get update Note that when you import a key like this using apt-key you are telling the system that you trust the key you're importing to sign software your system will be using Do not do this unless you're sure the key is really the key of the package distributor
- What are phased updates, and why does Ubuntu use them?
Updating via apt would ignore update phasing However, starting with Ubuntu 21 04, apt also uses phased updates, allowing phased updates to apply to all versions of Ubuntu, including Ubuntu Server and Ubuntu running in containers
- apt - How to delete broken packages in ubuntu - Ask Ubuntu
sudo apt-get autoclean Now clean the apt cache sudo apt-get clean Now remove any unnecessary dependancies sudo apt-get autoremove from the command above, you can identify any broken packages and forcefully remove it like this sudo dpkg --remove --force-remove-reinstreq package_name Finally mopup any other packages with dependacies sudo apt-get
- apt - The following packages have been kept back: Why and how do I . . .
apt-get install <list of packages kept back> this will resolve the kept-back issues and will ask to install additional packages, etc as was explained by other answers See also: Why use apt-get upgrade instead of apt-get dist-upgrade?
- Unable to locate package while trying to install packages with APT . . .
When apt-get install is unable to locate a package, the package you want to install couldn't be found within repositories that you have added (those in in etc apt sources list and under etc apt sources list d ) The following (general) procedure helps to solve this: Make sure you have enabled Ubuntu repositories:
- What is the difference between apt and apt-get? - Ask Ubuntu
The apt commands have been introduced to solve this problem apt consists some of the most widely used features from apt-get, apt-cache and apt-config leaving aside obscure and seldom used features
- apt - How to list all installed packages - Ask Ubuntu
I'd like to output a list of all installed packages into a text file so that I can review it and bulk-install on another system How would I do this?
- How to add a GPG key to the apt sources keyring? - Ask Ubuntu
Because etc apt trusted gpg d is a way to add keys to the keyring ( etc apt trusted gpg) w o apt-key add, by copying files Also note that: The recommended locations for keyrings are usr share keyrings for keyrings managed by packages, and etc apt keyrings for keyrings managed by the system operator
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