You’ll need to create passwords for each account. This is done with the "passwd" command. You will be prompted once for your old password and twice for the new one. 

·        User "root" changing the password for user "paul"

[root@bigboy root]# passwd paul
Changing password for user paul.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@bigboy root]#

·        Users may wish to change their passwords at a future date. Here is how unprivileged user "paul" would change his own password.

[paul@bigboy paul]$ passwd

Changing password for paul
Old password: your current password
Enter the new password (minimum of 5, maximum of 8 characters)
Please use a combination of upper and lower case letters and numbers.
New password: your new password

Re-enter new password: your new password
Password changed.
[paul@bigboy paul]$