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user1046658
Asked: 2020-06-06 10:29:08 +0800 CST

What is the correct command for sudo apt-get update --dry-run, which does not work?

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I saw the command sudo apt-get update --dry-run which apparently said it should give the number of packages that need updates. However, when I run it on Ubuntu 16.04, I get E: Command line option --dry-run is not understood in combination with the other options.

What is the right command that will give the number of updates, preferably similar to sudo apt-get update --dry-run?

command-line

1 Answers

  1. This is a wrong command to get "the number of packages that need updates".

    The correct command is

    sudo apt update

    It will check for updates and show the number like this:

    1 package can be upgraded. Run 'apt list --upgradable' to see it.
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