Where to find Rayshade

SunOS
Everything for version 4.0 is located in/IUS/usrc31/ray/

bin/
Main executable (rayshade)
doc/
DVI and PostScript guide (rayshade-guide.{dvi,ps}), quick ASCII summary of command-line options and specification grammar in rayshade-quickref.txt. No man page, sorry!
rayshade.4.0/
Complete source tree (LATEX source files for the user's guide in rayshade.4.0/Doc/Guide).
You should setpath PATH -i99 /IUS/usrc31/ray/bin.

Mach
Version 4.0.6 is a misc collection for all architectures. Rayshade is in /usr/misc/bin, but you should setpath -i99 /usr/misc/.rayshade to get the URT routines. You can find the source in /afs/cs/misc/rayshade/build/src/rayshade.4.0/.