Note: this question can apply to any version. I just chose an end-of-life (and therefore in the past) one in the example to avoid "one can't predict the future"-type answers.

The example, to make the question clearer: if I had kept running sudo apt-get install <specific-package>=<specific-version> && sudo apt-get remove <specific-package> on my Ubuntu once a day for the last 5 years, would I have ever encountered an error due to the package no longer being hosted by Canonical?

Assume problems such as security vulnerabilities or system instability were never found in that package/version.

  • Context: I'm writing an Ubuntu-based Dockerfile that apt-get installs fixed package versions and am wondering if it would ever break due to the above-mentioned error. packages.ubuntu.com/… old-releases.ubuntu.com/ubuntu/dists/warty
    – habit
    Dec 4 '21 at 9:34
  • 1
    Yes, old packages are removed from repos.
    – Pilot6
    Dec 4 '21 at 9:36
  • 1
    The most up-to-date (with patches applied) version is present
    – guiverc
    Dec 4 '21 at 9:36
  • @guiverc 16.04 was just an example. The question is general and can be applied to any version. I'll edit to make this clear.
    – habit
    Dec 4 '21 at 9:40
  • 4
    Requiring specific package versions is a recipe for failure. Why do you think you need to do that? This sounds like an XY Problem
    – Nmath
    Dec 4 '21 at 9:47

All latest packages for all releases are still available at the relevant URLs.

As an example we can select Midnight Commander:

If you have specific needs to get old (or exactly specified) package version with its URL - you can use my special Docker based script. More details may be found at this Q&A.

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