@george1421 You sir, are the man. I added those two lines
read -p " * Enter destination department for this computer: " dname
host_default_name="${dname}-${host_default_name}";
to fog.man.reg and was prompted for a department code, entered the dept code, then the hostname autopopped with the dept code prefix appended. However, after the device is registered, the prefix is not appended to the registered name.

