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--https://discourse.ubuntu.com/t/lunar-lobster-release-notes/31910
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--https://wiki.ubuntu.com/LunarLobster/ReleaseNotes/Ja
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--https://help.ubuntu.com/community/LunarUpgrades
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--https://gihyo.jp/admin/clip/01/ubuntu-topics/202304/21
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--http://www.nilab.info/wiki/Ubuntu.html