ubuntu 中如何创建root用户

001、

liujiaxin01@ubuntu01pc1:~/Desktop$ whoami
liujiaxin01
liujiaxin01@ubuntu01pc1:~/Desktop$ sudo passwd root       ## 创建root账户
[sudo] password for liujiaxin01: 
New password: 
Retype new password: 
passwd: password updated successfully                  ## 创建成功
liujiaxin01@ubuntu01pc1:~/Desktop$ su - root           ## 切换至root账户
Password: 
root@ubuntu01pc1:~# whoami
root