> One thing I like about the idea using 9p even in smaller systems is, > that you can define one file to be something like a "serial terminal". > If one has a lot of such embedded devices connected to a network, one > can easily have a "command line" for each of them without the need to > connect each to a real serial port.
we use cec(1). (not in the standard distribution, but in /n/sources/contrib/quanstro/cec.tar kernel patch in /n/sources/patch/cpu-cec) it runs directly on ethernet, not requiring 9p, tcp/udp/il or ip. one could use consolefs(4) to make this very easy on a large scale; we currently don't have such a need, so unfortunately i haven't had time to do this. - erik
