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Is the Update Manager (or Software Updater) the frontend of apt-get dist-upgrade?

3

Strictly, Update Manager, Software Centre and the apt suite (apt-get and apt-cache) are all front-ends to dpkg so anything that can be done with one can done with the others, but it is usually much easier to use the GUI tools which will also handle editing the config files automaically.

Note that the only dpkg command that most people use directly is dpkg --configure -a to fix things up when an install fails.

4

In a way yes. However the Update Manager combines a lot of apt-get commands that may depend on your update settings.

Update Settings

You can have a better understanding of apt-get options if you read the AptGet/Howto.Then you can figure out which GUI option correspond to which apt-get command.

2

Update-manager is essentially a GUI frontend for apt, which includes apt-get update, upgrade, and dist-upgrade functionality. Using the Update Manager is more convenient than using apt-get dist-upgrade, because using this command to upgrade to a new version of your distribution requires the modification of configuration files. There is less room for error using the Update Manager than using apt-get dist-upgrade.

do-release-upgrade is a command line tool similar to the Update Manager, which also does not require modification of apt configuration files.

  • To correct a common misconception: apt-get dist-upgrade is not just for upgrading to a new version of ubuntu (it is poorly named). apt-get update && apt-get dist-upgrade is a reasonable way to apply day-to-day package updates from the command line and will not upgrade to a new version of ubuntu. For most purposes there is no reason to use apt-get upgrade at all. – Croad Langshan Feb 14 '16 at 18:46

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