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To be honest, I'm surprised you got this because it was a one minute clue and I've just spotted a mistake in it.
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I spotted the mistake and took a guess Pete - ulate and circ gave it away
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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A customer showed me their internal system yesterday.
It runs on an IBM AS/400 and it's written in IBM RPG.
RPG was originally developed in 1959, but the latest stable version is from 2020.
I must say it looks surprisingly modern: Coding in RPG IV - a beginner's tutorial[^]
Not sure if that's also the version of RPG that their software is programmed in, but I'm guessing it isn't as it's 40-something years old.
Other than that it looks like a fancy DOS program (colored letters on a white background, so no retro black/green, and completely keyboard driven, although mouse works too).
Apparently, they've been trying to replace it for 25 years, but without much success.
Meanwhile it's still actively being developed and their supplier has a development team just for this client (all other customers switched to the newer version of the product).
My client is now looking into buying the entire product just so they can keep using it 
They could buy the product, but the programmers are of course in no way obliged to move with the software.
My guess is they'll HAVE TO replace it in the coming ten years or so and it would be better to start working on a replacement NOW rather than buy something that's already obsolete.
But just out of curiosity, how many here worked on RPG and how many still do, could and/or want to?
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I have worked for a short period on a IBM S/36 with RPG II some 30 odd years ago.
Forgot all about it besides the fact that it looked a lot like assembler and after checking your link doesn't even remotely resemble RPG IV.
After some 4 months I switched to the client side development which was done in Clipper 5 synchronising data with the S/36.
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Loved Clipper - my first paying language
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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My dad won't shut up about how great Clipper was and that everything that came after it is just a rip off 
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I'm especially fond of JRPG's 
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Sander Rossel wrote: I'm especially fond of JRPG's JSOP
Fixed that for you 
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I'd have to be almost as old as RPG to know who that is 
Haven't seen him around in ages, but then again, I'm not on here as much as I used to...
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In 1998 a contractor came to our place of business to give a short course in RPG.
I must say I was impressed with how primitive it was.
The difficult we do right away...
...the impossible takes slightly longer.
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Richard Andrew x64 wrote: I must say I was impressed with how primitive it was.
I do not know RPG (except by name, for 40+ years), never programmed it, yet I am curious to your criteria for classifying RPG (or any other language as "primitive". Is it primarily because it is lacking certain features (if so: which features?) Or is it primarily for the way it is doing things?
I am curious to how well such evaluation criteria - in a language independent from - would classify the languages of today, and their early versions, as "primitive". Was the original strostrup C++ language "primitive"? Was C&R C? Did C# start out as a "primitive" language, but at some version had developed to "non-primitive" and maybe later to "advanced"?
I must admit that I think the last half dozen or so revisions of C++ and C# have brought "advanced" features that I'd rather be without!
Religious freedom is the freedom to say that two plus two make five.
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You have to play as a Lawful Paladin.
CI/CD = Continuous Impediment/Continuous Despair
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I prefer to be neutral chaotic adventurer  
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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I first read that as neurotic casual adventurer...
Software Zen: delete this;
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Sometimes is not that far...
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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Always Chaotic Evil Sorcerer
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last time I saw that was 1996. Interesting how much "old" code is still around and needing support.
To err is human to really elephant it up you need a computer
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If by "support" you mean "active development" then yes 
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I worked for a company that did. They were starting to connect to the db using .net with an ec2 connection to replace the old green screen with a new website. It's been YEARS but I'm not sure they've completely gotten rid of it. They had about a half dozen rpg programmers at the time so it's not completely a dead language.
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Kschuler wrote: They had about a half dozen rpg programmers
With an average age of 80?
Still, half a dozen ain't bad.
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We don't have a setter for Fridays
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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I've dropped a one for today.
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Good man
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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