Linux How to change passwords?

[dEEpEst]

How to change passwords?​

To change or create a password in Linux, use the passwd command. If the user does not have root rights, then he will be able to change only his own password. If he is privileged, then he will be able to change for different users.

Changing your own password:

$ passwd

Changing password for vitek
current password:
Enter new password:
Retype new password:

Now let's imagine that our system is being used by a figurative "Vasek" who has forgotten his password. We, as an admin, can create a new password for "Vasya" and let him into the system:

$ sudo passwd vasya

New password:
Retype new password:

That's it, we can tell Vasya the password and let him use the system:

$ su - vasya
Password:
vasya@ubuntu-desktop:~$

And if we, as an admin, notice that the user has a weak password, we can forcibly make it invalid and force the user to update the data at the next login attempt. To do this, add the "-e" flag:

$ sudo passwd -e vasya
$ sudo su - vasya

You are required to change your password immediately...
Changing password for vasya.
Current password: 
New password: 
Retype new password:

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