I never personally used Xenix, but I did use SCO openserver & unixware, back in the day working for a billing company. We had a bank of modems wired up, and th

I never personally used Xenix, but I did use SCO openserver & unixware, back in the day working for a billing company. We had a bank of modems wired up, and the system would maintain SSH tunnels to remote sites, then use UUCP to transfer nightly batch-reports to a centralized location for processing. My memory is hazy, but I remember having a hard time getting the system running on new hardware, and kernel updates were always a scary thing to apply - no change there I guess. Even at the time though Linux (Debian) was starting to replace these machines due to cost grounds.