[COFF] Re: "9 skills our grandkids won't have" - Is this a TUHS topic?

[Greg 'groggy' Lehey <grog@lemis.com>]

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On Friday,  1 July 2022 at 16:05:30 +0300, Ori Idan wrote:
> On Thu, Jun 30, 2022 at 7:38 PM Paul Winalski <paul.winalski@gmail.com>
> wrote:
>
>>
>> o why a memory access violation is reported as "segmentation fault" or
>> "bus error", and the difference between the two
>>
>> o why CTRL/D is used to end a shell command line session
>
> I am not sure I know that, I'd be happy to know.

It's the ASCII control character EOT (end of transmission).

>> o why CTRL/S and CTRL/Q are used for flow control in a shell command
>> line session
>>
> Also would be happy to know.

Also ASCII control characters: XON (^S) and XOFF (^Q).
https://en.wikipedia.org/wiki/C0_and_C1_control_codes#Device_control
tells me:

  DC1 and DC3 (known also as XON and XOFF respectively in this usage)
  originated as the "start and stop remote paper-tape-reader"
  functions in ASCII Telex networks. This teleprinter usage became the
  de facto standard for software flow control.[13]

Greg
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