That is the certificate I earned upon completing community college. Their Linux curriculum was originally designed around Debian, but when IBM acquired RHEL, redesigned to offer this foot-in-the-door.
IBM still seems to do alright in the legacy mainframe/mini market. It is quite strange how the AS/400 and zOS stuff all goes without notice of ordinary IT guys like me, as if it didn't exist, but still powers a lot of machine rooms that aren't AI data centers.
Ah jeez, that makes me feel old. It’s particularly impactful as my dad worked in the computer industry at the time of the transition and the firm he worked for were a little late to the game. They limped on for years but ultimately failed.
I learned BASIC in 1981 on the TRS-80 Model I with 4k RAM (later upgraded to a massive 16k), and it wasn't long before someone showed me EDTASM [1], and I was hooked. My parents couldn't believe me when I asked them to buy "How to Program the Z80" by Rodnay Zaks [2]. They were shocked, it was the first time I asked them to buy a technical book. I was so excited I couldn't sleep for days. I was in High School, and I would carry the book around and read, use the lookup tables, and write Z80 assembly in my spiral-bound 8.5"x11" notebook.
One three-day weekend, I slept about 4 hours while I was disassembling the BASIC ROM to find nuggets I could call in my Z80 programs, and also to learn so much more about the video, the cassette interface, interrupts, etc. My notebook looked like something a madman had scribbled on the walls of an asylum to everyone around me, but to me it was perfectly organized, and I used it to reference things I would use later in my programs. I got to the point where I could read the hex dumps and "see" the op codes in my mind; people would look over my shoulder while I was debugging, and I'd be explaining what the code was doing, but I hadn't disassembled it yet. I didn't even realize I was doing that until one of my classmates pointed it out: "Hey, disassemble that. I'm not following you, how the heck do you see that?"
And all of this because my science teacher had that TRS-80 Model I sitting in the corner of his classroom gathering dust; nobody knew what it was, I didn't either, but I had to figure it out. I've always had this bug, I don't believe in magic, I want to know how everything works, it's been an insatiable thing all my life, that first machine set me on a course of learning for the rest of my life.
Thanks, Mr. Kruzan, you changed my life. I'll never forget you. Oh, and thanks to all the people who created the Z80, the TRS-80 Model I, and paved the path for me to learn computers and never stop learning.
We are truly building on the shoulders of giants; every generation, more giants. It's humbling to look back and think about it forty-five years later...
For me it was the Commodore 64 from a few years later (1982, I think?) - that's what got me into computers. Back then, to me and my nerdy friends, the C64 felt sorta like a 'rebel computer'; we weren't doing Lotus 1-2-3 or anything practical at all. We were just tinkering, mostly war dialing and pirating games. The C64 was cheap enough that broke-ass kids like me could afford to do the same shit the Apple II and TRS-80s were doing.
That is the certificate I earned upon completing community college. Their Linux curriculum was originally designed around Debian, but when IBM acquired RHEL, redesigned to offer this foot-in-the-door.
IBM still seems to do alright in the legacy mainframe/mini market. It is quite strange how the AS/400 and zOS stuff all goes without notice of ordinary IT guys like me, as if it didn't exist, but still powers a lot of machine rooms that aren't AI data centers.
My first pc ran CP/M
And all of this because my science teacher had that TRS-80 Model I sitting in the corner of his classroom gathering dust; nobody knew what it was, I didn't either, but I had to figure it out. I've always had this bug, I don't believe in magic, I want to know how everything works, it's been an insatiable thing all my life, that first machine set me on a course of learning for the rest of my life.
Thanks, Mr. Kruzan, you changed my life. I'll never forget you. Oh, and thanks to all the people who created the Z80, the TRS-80 Model I, and paved the path for me to learn computers and never stop learning.
We are truly building on the shoulders of giants; every generation, more giants. It's humbling to look back and think about it forty-five years later...
[1] https://www.trs-80.org/edtasm.html
[2] http://www.z80.info/zip/zaks_book.pdf