Aug 04, 2018
Ubuntu – Ubuntu Packages Search Switched packages.ubuntu.com to the newer codebase that also runs on packages.debian.org. The two most important changes for users are that most pages are now generated dynamically (which makes for faster updates and more flexibility) and that the search functions should be much faster now. Getting information about packages That is how you tell apt to search the packages you've downloaded, using REGEX (regular expression, a pattern-matching 'language') -- if your pattern uses any keystrokes that mean something to your command shell (e.g. ❶?*]) you'll need to quote them so that apt-cache will be able to see them, instead of having the shell expand the term to a list of file names that mean something else entirely. What does sudo apt-get update command do? [Linux Commands
[Ubuntu] PMS won't upgrade using sudo apt-get upgrade
APT provides other command options to override decisions made by apt-get's conflict resolution system. One option is to force a particular version of a package. This can downgrade a package and render dependent software inoperable, so the user must be careful. Oct 24, 2018 · How do I upgrade a single package using apt-get? Introduction : By default when you run either ‘apt-get upgrade’ or ‘apt upgrade’, Ubuntu will update all installed packages. However, in some cases, you may want to upgrade a specific package only such as Apache or Nginx. This enables exact matching of the source package name and version, implicitly enabling the APT::Get::Only-Source option. Note that source packages are not installed and tracked in the dpkg database like binary packages; they are simply downloaded to the current directory, like source tarballs.
OK, I found it. apt policy will show the version details. It also shows which version is currently installed and which versions are available to install. For example, apt-cache policy hylafax+
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