Here's a look at mainframe arcana from the perspective of someone with training only on POSIX/Windows era systems -- COBOL was the easy part. Figuring out how

Here's a look at mainframe arcana from the perspective of someone with training only on POSIX/Windows era systems -- COBOL was the easy part. Figuring out how to format the program text and submit it to the compiler took... quite some time. https://medium.com/the-technical-archaeologist/hello-world-on-z-os-a0ef31c1e87f https://medium.com/the-technical-archaeologist/hello-world-o...