How do I change a user password in Ubuntu Linux?

You can change a user password in Ubuntu Linux by using the passwd command.

To change the password of the current user, simply run the following command in a terminal:

passwd

To change the password of another user, you need to have root privileges. You can use the sudo command to run the passwd command as root:

sudo passwd username

Replace username with the name of the user whose password you want to change. You will be prompted to enter and confirm the new password for the user.