为AWS的Lightsail/EC2开启root密码登录最简单的方法

echo root:mima sudo chpasswd root
sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config;
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config;
sudo reboot

将第一行mima替换成你要更改的root密码