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Ask Slashdot: What Are Some Things That Every Hacker Once Knew? (ibiblio.org)

Open source guru Eric Raymond turns 60 this year, prompting this question from an anonymous reader: Eric Raymond's newest writing project is "Things Every Hacker Once Knew," inspired by the day he learned that not every programmer today's knows the bit structure of ASCII. "I didn't write it as a nostalgia trip -- I don't miss underpowered computers, primitive tools, and tiny low-resolution displays... In any kind of craft or profession, I think knowing the way things used to be done, and the issues those who came before you struggled with, is quite properly a source of pride and wisdom. It gives you a useful kind of perspective on today's challenges."

He writes later that it's to "assist retrospective understanding by younger hackers so they can make sense of the fossils and survivals still embedded in current technology." It's focusing on ASCII and "related technologies" like hardware terminals, modems and RS-232. ("This is lore that was at one time near-universal and is no longer.") Sections include "UUCP and BBSes, the forgotten pre-Internets" and "The strange afterlife of the Hayes smartmodem" (which points out some AT commands survived to this day in smartphones). He requests any would-be contributors to remember that "I'm trying to describe common knowledge at the time." This got my thinking -- what are some that every programmer once knew that have since been forgotten by newer generations of programmers?

Eric Raymond is still hard at work today on the NTPsec project -- a secure, hardened, and improved implementation of Network Time Protocol -- and he promises donations to his Patreon page will help fund it. But what things do you remember that were commonplace knowledge "back in the day" that have now become largely forgotten? Leave your best answers in the comments. What are some things that every hacker once knew?

5 of 615 comments (clear)

  1. Hexadecimal by IHTFISP · · Score: 5, Funny

    Hexadecimal: what it is, why it is and how & why it evolved from octal.

    That, and why real computer scientists often confuse Halloween w/ Christmas: 31 Oct = 25 Dec.

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    Error: NSE - No Signature Error
  2. Re:Big Floppy is scamming you by Anonymous Coward · · Score: 3, Funny

    Big Floppy

    There's a pill for that.

  3. Re:Big Floppy is scamming you by silentcoder · · Score: 4, Funny

    There wasn't one then.

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    Unicode killed the ASCII-art *
  4. Re:Zero Page memory locations by Anonymous Coward · · Score: 2, Funny

    I'm 18. I learned programming on Charles Babbage's difference engine.

  5. Re:old school by MachineShedFred · · Score: 3, Funny

    Don't forget modems that didn't have guard time between +++ and actually entering command mode.

    There was a good amount of time when you could get on IRC or something similar and type +++ATH and watch 1/3 of the channel disappear because they hadn't updated their firmware, or had a shitty modem that couldn't update firmware to fix it.

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    Slashdot still doesnâ(TM)t support Unicode after it was added to the HTML standard in 1997.