I have successfully installed some packages using the command: sudo apt-get install packagename when I have known in advance that those packages are available. But how can I search for or get a l...

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.

Aug 27, 2010 · apt-get has a few options which looks the same to me: autoclean, autoremove and clean. What do each of them do?

Use this: sudo apt update # Fetches the list of available updates sudo apt upgrade # Installs some updates; does not remove packages sudo apt full-upgrade # Installs updates; may also remove …

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?

Oct 24, 2020 · You need to know why apt-key add is deprecated All of the answers so far work around the symptom ("Don't use apt-key add ") but fail to address the actual problem that led to apt-key add …

May 16, 2025 · I run the Ubuntu 24.04 (pull from docker hub) and try to install some packages. When I run sudo apt update, it shows the following errors: The following signatures couldn't be verified …

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 …

apt-cache's madison command attempts to mimic the output format and a subset of the functionality of the Debian archive management tool, madison. It displays available versions of a package in a …

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 …