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Many problems on this website create the appearance that something is missing from Ubuntu and that a remedy might involve sudo apt install. Unfortunately many posted solutions do not have references. For example is the following.

askubuntu has a web page for the following problem.

Gtk-Message: Failed to load module "canberra-gtk-module"

The answer with the most up-votes has 389 up-votes. askubuntu.com link

The solution with the most up-votes does not seek to install using the same string that is cited in the error message. In other words the answer is not sudo apt install canberra-gtk-module. The solution with the most up-votes is somewhat similar to that but not exactly. Since it is not exactly that, ideally the correct answer or the most up-voted answer should have a reference to a canonical source.

How can I independently verify via referencing canonical sources that the most up-voted answer is the correct answer?

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    I don't think there are "canonical sources" to reference on this. The commands are different because some prefer apt while others prefer apt-get. Welcome to the maze of linux uniformity. As time progressed, and gtk3 became prevalent, canberra-gtk3-module became available, whereas canberra-gtk-module is gtk2.
    – mikewhatever
    Commented Dec 9, 2020 at 21:02
  • @mikewhatever That some people use apt-get is not the only difference.
    – H2ONaCl
    Commented Dec 9, 2020 at 21:16
  • The shift from apt-get to apt was introduced in Ubuntu 16.04. itsfoss.com/apt-vs-apt-get-difference
    – wyphan
    Commented Dec 9, 2020 at 21:23
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    @wyphan I have not encountered advice that apt-get is still useful for the vast majority of users so I always use apt now.
    – H2ONaCl
    Commented Dec 9, 2020 at 21:25
  • There was apt-get when I started with Ubuntu, and apt was added later. There was no shift, as apt-get is still as useful as before, so why change.
    – mikewhatever
    Commented Dec 9, 2020 at 21:30
  • If an answer would be improved with a reference link, feel free to propose an edit, or write a new up-to-date answer, or leave a comment suggesting specific improvements. If an answer has, over time, become misleading or counterproductive but remains highly voted, please flag it..
    – user535733
    Commented Dec 9, 2020 at 21:48
  • For example, I answered a popular question back in 2012, about Ubuntu 11.10. Does this answer still apply to Ubuntu 20.10? Is it my responsibility to check? Every release?
    – waltinator
    Commented Dec 9, 2020 at 23:45
  • @mikewhatever The most upvoted answer at the link uses apt and I also use apt so the difference does not arise from the installation program. This question is about the package names.
    – H2ONaCl
    Commented Dec 20, 2020 at 3:01

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For packages, you can always verify with a search on packages.ubuntu.com.

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