On 02/17/2014 08:44 AM, Lightner, Jeff wrote: > I had been working with various UNIX systems starting in the mid 80s (I'd been doing DOS before that and did Novell Netware) I used DOS on an IBM-360 (mainframe). Wrote ASM programs. Nothing like either PC-DOS or MS-DOS, as you can imagine. Clearly older by 15+ yrs than those johnny-come-lately OSes for intel chips. ;)