[abetusk]

Yes.

It wasn't that the code itself was badly or well written so much as the concepts of how each process was isolated from each other, the communication protocol was well established and the external dependencies were kept to a minimum.

Data structures were chosen for ease of understanding rather than (run-time) efficiency which was the appropriate choice for this application. The application(s) relied heavily on various other scripts and the operating system to establish a (secure) network communication, offloading a lot of the complexity from the application to the operating system (where it belongs, in my opinion).

I recently update/ported the code base to work on more modern hardware and, besides some minimal updates and fixes, it worked well.

The code base was 10+ years old and mostly written in a combination of C and shell.