The Kernel Configuration Files
At the time of this writing, FreeBSD doesn't have a visual kernel configuration utility such as Red Hat Linux's linuxconf or the make config dialog-driven process in other Linux distributions. FreeBSD's kernel is configured using text files, a method that may seem quite arcane, but which does provide some flexibility that the visual methods don't allow.
A visual configuration tool provides interactive feedback, allowing you to enable and disable devices and options on a one-by-one basis. What it doesn't do, though, is allow you to maintain multiple configurations side-by-side, comparing them using tools such as diff and grep, and using the base-level GENERIC configuration, previous known valid configurations, and ...
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