The spring 2023 release of Ubuntu, version 23.04 or the “Lunar Lobster,” has reached the end of its support period. As a non-Long Term Support (LTS) release, it’s supported for a shorter timeframe. Linux Insider published a useful how-to as machines running 23.04, especially servers, should be upgraded as soon as possible. Generally a non-LTS release will be upgraded to a subsequent non-LTS release, as the closest LTS version will always be a downgrade (in this case, 22.04), which may affect package support.
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