A few years ago I was in love with Xenix, and I managed to track down a fairly sizable collection of software that was not openly available, including the Devel

A few years ago I was in love with Xenix, and I managed to track down a fairly sizable collection of software that was not openly available, including the Developement system. Some of these did not have any working serial/key pair, so a friend wrote a k&r c program that printed a sh file that ran brand with every activation key for a given serial... Took a couple of minutes in a virtual machine to find the correct one, but it never felt like a neat solution. Then in 2017 I found this post... And the neat solution I was looking for.