How to achieve the first SSH login for Linux users who need to reset a new password

Generally, after we choose a VPS server, we reinstall the system or when we purchase a new one, the merchant automatically activates the default system and we set the password ourselves or the merchant gives us a random password to log in directly using SSH. But have we found that some merchants require us to reset a new password when I log in to SSH for the first time before I can enter?

Similarly, if we manage multiple people's permissions in the server and help a specified user set password permissions, we initialize a new password. If the user logs in to SSH for the first time, the best way is Log in to remind him to change his new password, which seems a little more humane. So how is it achieved? Here the snail search solutions are sorted out.

First, add new users

useradd laozuo

Add a new user, the name of the user here is defined by ourselves.

Second, set a new user password

passwd laozuo

Here we need to set an initial password for the newly created user.

Changing password for user laozuo.New password:Retype new password:passwd: all authentication tokens updated successfully.

We can see that there are two prompts that require you to enter the password twice.

Third, lock the account

usermod -L laozuo

Here we need to lock the current user account.

Fourth, forced user account expiration

chage -d 0 laozuo

Fifth, unlock user account

usermod -U laozuo

In this way, we try to log in with a new account to see if there is a prompt to reset a new password after logging in for the first time.

That's the effect.

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