SunOS supports this from 3.3 on up, I believe.

#define AUTHOR "mouse@Collatz.McRCIM.McGill.EDU (der Mouse)"

/*
 * The original message didn't make it clear to me whether there was no
 * init on-disk or whether it just wasn't in /sbin/init.  If the latter,
 * isn't there some boot option that makes the kernel prompt for the name
 * to exec as init?  I'm certain I've seen such an option, though I'm not
 * certain it was for NetBSD.
 */

#undef AUTHOR	/* "mouse@Collatz.McRCIM.McGill.EDU (der Mouse)" */




				--*greywolf;
--
Sun could have remained quite profitable by staying with BSD-based OSs, and
they wouldn't have pissed off NEARLY as many customers.