Each user of the system can change their own password using a GUI application provided by Linux Mint. We're going to learn how to do that now:
Click on the Menu button and click again on the All Applications button located on the right-hand side of the Favorites pane.
Click on the Administration menu option.
A set of new options will be displayed, so you only need to click on the Users and Groups menu option as shown in the following screenshot:
After clicking on Users and Groups, a dialog box asking for your password will be displayed. Type your password and click on the Authenticate button:
A new window will be displayed if your password is correct. This is the Linux Mint application for dealing with users and groups:
Click on the Change... button close to the Password: Asked on login option.
The following window allows you to change your password. First, you should type your current password. Then you can select the Set password by hand option...