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Can confirm. My first job out of college was building out a compatibility layer across some 14 variants of UNIX. Hopping between boxes involved an uncomfortable

Can confirm. My first job out of college was building out a compatibility layer across some 14 variants of UNIX. Hopping between boxes involved an uncomfortable amount of time waiting for nroff to render your man page because common options to common commands were decidedly uncommon .

Annatar 8y ago
SVR UNIXes like HP-UX, Solaris and IRIX were very consistent (I used all three of them simultaneously): if one understood SVR4, one could move between those three seamlessly. DEC UNIX, OSF/1 and Ultrix were a variation of BSD. If one knew that, there was no problem either. No comment on AIX, since my brush-ins with it were far too short to be able to claim anything. What else was there? 14 is a large number when it comes to operating systems.
- vetinari 8y ago
  DEC UNIX and OSF/1 (and Tru64) is the same OS, just different releases.
  - Annatar 8y ago
    I know that, since I used all three of them.