So Joe had, without even knowing it, set me up to grab yet another treasure: the latest and greatest version of the SunOS, a flavor of the Unix operating system developed by Sun Microsystems for its server and workstation systems. It wasn’t hard to find the master machine storing the SunOS source code. Even when compressed, though, this was one humongous package of data—not as massive as DEC’s VMS operating system, but still massive enough to be daunting.