解决Ubuntu 20.04.2.0 LTS 64位 无法使用sudu命令，导致无法设置root密码

输入sudo passwd root，然而会出现如下报错

Command 'sudu' not found, did you mean:
  command 'tudu' from deb tudu (0.10.4-1)
  command 'sudo' from deb sudo (1.9.9-1ubuntu2)
  command 'sudo' from deb sudo-ldap (1.9.9-1ubuntu2)
Try: sudo apt install <deb name>

1.解决方案