Idiots guide to shared memory

[C.Elvin at ee.surrey.ac.uk]

Does anybody out there have a few small, simple programs that demonstrate
the use of the shared memory facilities.  I have tried to follow the
manual pages for shmget and shmat etc etc but am unable to attach a shared
segment.  I think a few example programs would help to cure my delinquency
in this area.

system details:
	diskless 3/60 8 MBytes, OS3.5, served from 3/280S OS3.5

			Thanx
			Chris