As long as the letters are not consecutive or the numbers are not consecutive, for example, abc will not work, acd will work, and so on. At the same time, the password should not be the same as the user name, and the length should not be less than 5. You can check the configuration file /etc/login.defs
sudo passwd
It seems okAs long as the letters are not consecutive or the numbers are not consecutive, for example, abc will not work, acd will work, and so on. At the same time, the password should not be the same as the user name, and the length should not be less than 5. You can check the configuration file /etc/login.defs