root@server /home/tom# passwd guest
Changing local password for guest.
New password:
Please don't use an all-lower case password.
Please use a different password. Unusual capitalization,
control characters, or digits are suggested.
New password:
Please don't use an all-lower case password.
Please use a different password. Unusual capitalization,
control characters, or digits are suggested.
New password:
Please don't use an all-lower case password.
Please use a different password. Unusual capitalization,
control characters, or digits are suggested.
New password:
Retype new password: