Ubuntu 18.04如何升级为Ubuntu 20.04

1.输入该命令按回车键：sudo apt update



2.输入该命令按回车键：sudo apt upgrade



3.按照提示输入Y按回车键



4.按照默认选项按回车键



5.输入该命令按回车键：sudo do-release-upgrade -c



6.输入该命令按回车键：reboot



7.输入该命令按回车键：sudo do-release-upgrade



8.按照提示输入y按回车键



9.按照提示按回车键



10.按照提示输入y按回车键



11.按照提示输入y按回车键



12.按照提示输入y按回车键



13.输入该命令按回车键：lsb_release -a