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`