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The PC-BSD® User Manager utility, seen in Figure 8.8a, allows you to easily add and delete users and groups, as well as change a user's or the administrative password. To access this utility, go to Control Panel ➜ User Manager or type pc-su pc-usermanager. You will need to input the administrative password in order to access this utility.
In this example, the system has 2 user accounts. The dru account has the ability to become the superuser as the "Can administrate system" checkbox is checked.
The password for any user can be changed by first highlighting the user name then clicking the "Change Password" button. You will not be prompted for the old password in order to reset a user's password; this can be handy if a user has forgotten their password and can no longer log into the PC-BSD® system. If you click the "Change Admin Password" button, you can change the password that is used whenever you are prompted for administrative access.
If you click the "Advanced View" button, this screen will change to show all of the accounts on the system, not just the user accounts that you created. An example is seen in Figure 8.8b.
The accounts that you did not create are known as system accounts and are needed by the operating system or installed applications. You should not delete any accounts that you did not create yourself as doing so may cause a previously working application to stop working. "Advanced View" provides additional information associated with each account, such as the user ID number, full name (description), home directory, default shell, and primary group. System accounts usually have a shell of nologin for security reasons, meaning that an attacker cannot try to login to the system using that account name.
Figure 8.8c shows the add user account creation screen that opens when you click the "Add" button.
This screen is used to input the following information when adding a new user or system account:
Username: the name the user will use when they log in to the system; it is case sensitive and can not contain any spaces. If you are creating a system account needed by an application, use the name provided by the application's installation instructions. If the name that you choose already exists as an account, it will be highlighted in red and the utility will prompt you to use another name.
Full Name: this field provides a description of the account and can contain spaces. If it is a user account, use the person's first and last name. If it is a system account, input a description to remind you which application uses the account.
Home Directory: you can leave this field empty for a user account as the system will automatically create a home directory under /home/username. However, if you are creating a system account it is important to override this default by typing in /var/empty or /nonexistent unless the application's installation instructions specify that the account needs a specific home directory.
Shell: this drop-down menu contains the shells that are available to users when they are at a command prompt. You can either keep the default or select a shell which the user prefers.
Primary Group: if you leave the default button of "New Group" selected, a group will be created with the same name as the user. This is usually what you want unless you are creating a system account and the installation instructions specify a different group name. Note that the drop-down menu for specifying a group name will only show existing groups, but you can quickly create a group using the "Groups" tab.
Password: the password is case-sensitive and needs to be confirmed.
Once you have made your selections, press the "Ok" button to create the account.
If you click the "Groups" tab, you can view all of the groups on the system, as seen in Figure 8.8d.
This screen has 3 columns:
Groups: shows all of the groups on the system.
Available: shows all of the system and user accounts on the system in alphabetical order.
Members: indicates if the highlighted group contains any user accounts.