TF is even this

>Thanks to this, an administrator seeing the string 123456/QUSER/QZDASOINIT immediately knows who and what launched it, without having to map mysterious PID numbers to service names.

did old UNIXes didn't have process names or something ? Those are exactly same information (pid/user/process name) UNIX derivatives or hell, windows get

Author seems to be blindsided by the "different" enough to not have any useful insight in it

The article was kind of terrible. If it had more emojis I would have said it was an AI generated summary. To really understand how strange AS/400 if you need to read Frank Soltis's book (he was the original architect of it at IBM).

It's cute to see folks who have completely drunk the in-house koolaid try to communicate to outsiders, and we're better off for it. I really struggled to understand OS/400 coming in with a working knowledge of Unix/Linux, concepts as simple as creating a text file document in OS/400 don't translate at all.