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I would just like to know how to upgrade Xubuntu 18.04 to Xubuntu 20.04 Thank you

Thank you

sekou kebe
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I am certain the answer is on this site somewhere, but really quickly first make sure all current installed apps are up-to-date before upgrading.

Check what the update-manager is set for:

grep Prompt /etc/update-manager/release-upgrades

Make sure the return is Prompt=lts

Then from a terminal window type in:

sudo apt update
sudo apt upgrade

Then just run the following line to upgrade your distro to the next release:

do-release-upgrade
Terrance
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I would always read the release notes first for you release

https://wiki.xubuntu.org/releases/20.04/release-notes

Many flavors don't provide upgrade instructions, because their upgrade instructions are identical to the main Ubuntu system, so they instead refer you there

https://wiki.ubuntu.com/FocalFossa/ReleaseNoteshttps://wiki.ubuntu.com/FocalFossa/ReleaseNotes

(Releases that use Qt, such as Kubuntu, Lubuntu tend to have different commands, as they use different options (-m) to ensure screen saver/lock screen doesn't occur)

From a text terminal you can upgrade as Terrance describes, but you'll need to ensure screensaver or power saving functions don't kick in if using a GUI or problems may occur.

If using the GUI (including terminal on GUI) I'd suggest using command(s) provided in the main Ubuntu release notes (they disable screensaver/power etc during upgrade process). The instructions are found in the "Upgrading from Ubuntu 18.04 LTS or 19.10" section.

guiverc
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  • I've avoided giving commands intentionally, as I feel it's worthwhile reading the release notes. Known issues, and work-arounds are found there, as discovered by the teams in testing, which are worth reading first for any upgrade, so should they occur (which yes is unlikely), you don't panic, and know where the solution (work-around) is. – guiverc Jan 16 '21 at 21:34