When passwords are shadowed, the /etc/passwd file shows '*', 'x', or another character, instead of the password and /etc/shadow holds the following user information:
* User login name
* Salt and Hashed password
* Days since Epoch of last password change
* Days until change allowed
* Days before change required
* Days warning for expiration
* Days before account inactive
* Days since Epoch when account expires
* Reserved
