install
$ sudo add-apt-repository ppa:ubuntukylin-members/ukui3.0
$ sudo apt upgrade
or
$ sudo apt-get install curl
$ curl -sL 'https://keyserver.ubuntu.com/pks/lookup?&op=get&search=0x73BC8FBCF5DE40C6ADFCFFFA9C949F2093F565FF' | sudo apt-key add
$ sudo apt-add-repository 'deb http://archive.ubuntukylin.com/ukui focal main'
$ sudo apt upgrade
来源:oschina
链接:https://my.oschina.net/qwfys200/blog/4335215