28
Still...
(gnucobol.sourceforge.io)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I'm almost a boomer. I started out in a Big Iron shop that mainly ran Cobol I haven't touched it in decades, and I was an Admin, so I barely touched the stuff. Now I could read the stuff, but not code a hello world.
A few years back a friend my age, who was a CS major, but had mainly been a mom for 2 decades returned to the job market, thinking that she faced an impossible task, that she had obsoleted herself. She was working within a week, maintaining Cobol at a bank, and making mint.