this post was submitted on 21 Nov 2023
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Yeah. I know of ancient AS/400 and slightly less ancient RS/6000 systems still humming along, keeping insurance companies running.
But they probably haven't seen software updates in decades. Linux 1.0 didn't even exist when they were new, let alone 6.7.
The AS/400 platform is still alive and actively maintained by IBM so I’m told, although I think it goes under the Power Systems and IBM i brands now. I know several business still using them, with development teams still coding with RPG etc. Apparently there is also reasonable ecosystem of middleware to interface with more modern systems, and some sort of *nix compatibility layer to run more modern software on the platform.
I’ve never touched one myself, but they are keeping a few greybeards I know in steady work.
Costco still runs stores on AS/400. Ever wonder what those all-text terminals are all over the store?