Step 1: Steps to change existing user accounts password

In the terminal enter the below commands to change the existing user passwords.

# passwd dscguest

It will ask you a new password and re-enter the same password when it asks for reconfirmation.

# < enter new password for dscguest >

# < re-enter password for dscguest >

We have to follow the same steps for Diamond user.

# passwd diamond

It will ask for you a new password and re-enter the same password when it asks for reconfirmation.

# < enter new password for diamond >

# < re-enter password for diamond >

Same steps for Root user as well as shown in the image below.