![]() ![]() Remember to backup everything that you don't want to lose before you start on this venture. It is often easier and faster to install a fresh system than to do-release-upgrade, particularly if there are several steps, or if the new version is very different from the previous one. Update & full-upgrade the current system, so that it is up to date. Remove all PPAs and non-standard program packages (that do not belong to the Ubuntu repositories), because they can break the release-upgrade process, There is one exception: You can also do-release-upgrade from the previous LTS version to the next LTS version, for example This method works from a previous version to the next version. You find more details in the built-in manual man do-release-upgrade Backup everything that you don't want to lose before you start on this venture. Upgrade to a new version alias release of Ubuntu You find more details in the built-in manual man apt-get # old syntax If you call apt install without any parameter (no package specified), it will tell you if there are packages to upgrade, but it will not upgrade anything. Sudo apt install program-package-name # new syntax Sudo apt-get install program-package-name # old syntax It is a good idea to update before installing. ![]() When you intend to install a new program package, you can run the following command lines. When you intend to upgrade the system (within the same version of Ubuntu), you can run one of the following command lines sudo apt update & sudo apt upgrade ![]() Install a program package, a new package that was not yet installed sudo apt-get upgrade # old syntax Or if you want to upgrade and also perform checks and fixes to upgrade to a fully upgraded and compatible system (this is what I do), sudo apt-get dist-upgrade # old syntax upgrade (apt-get(8)) upgrade is used to install available upgrades of all packages currently installed on the system from the sources configured via sources. Upgrade all current program packages in the Ubuntu operating system, that are installed automatically or from the repositories or from a PPA. Update the list of all current program packages in the repositories in order to determine which packages are candidates for upgrading. upgrade checks all your installed packages and updates them if it's needed. It’s always best to update before installing or upgrading, unless you’ve updated since the last mirror pulse (I’d have to check how often they happen now if you updated within the last day you should be fine).Short answer citing the comment by Yanukįor install you have to point a package or packages you want to install or upgrade. Assuming no bugs, the result should be the same (apart from obsolete configuration files, but that’s a minor concern). Strictly speaking the installation isn’t exactly equivalent: installing a new version from scratch isn’t quite the same as installing an older version and upgrading. If you install a package with out-dated indexes, then update and upgrade, you’ll end up with the same installed version as you’d get by updating before you install, as long as the older version is still available in the repositories. There is no need to use full-upgrade / dist-upgrade for routine installation of updates. upgrade upgrades all installed packages to the latest versions listed in the package indexes available locally, following the pin priorities (this might fail for the same reason as install) it also installs any newly-required dependencies And if for some reason you preferred to use apt-get instead of apt, you could use this: sudo apt-get update & sudo apt-get upgrade -with-new-pkgs.install installs the listed packages and any necessary dependencies, using the package indexes available locally (so it might fail, if the indexes refer to package versions which are no longer available in the repositories or the package cache).update retrieves the current package indexes from the repositories.The various apt operations behave as follows: I’m not 100% sure what your question is exactly, but perhaps a general answer will help. ![]()
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