How to change password on Linux Ubuntu
Step 1:
Click on system settings.
Step 2:
Click on User Accounts on system settings.
Step 3:
Unlock the user Account
Step 4:
Enter Your current password.
Click on Authenticate.
Step 5:
Double click on Password.
Step 6:
Enter your current password.
Enter New Password.
Confirm your new password.
Click on change.