From Dr. Dobb's Journal: The Hurd's attempt at modularity goes beyond using a microkernel with clean interfaces. It also organizes
the extra kernel OS facilities into modules called "servers" (or daemons; these are the "UNIX-replacing
daemons" referred to in the Hurd acronym). Each provides a fixed set of services to user applications. They
communicate with each other, the kernel, and user processes by a set of clean interfaces.
November 1, 2000