Mark Zhitomirski mz0

Runtimes (in Rust unless noted)

Get a PGP key and check validity

MySQL PGP pubkey bug of 2025-10-22

export KEY16=B7B3B788A8D3785C
gpg --no-default-keyring --keyring /tmp/keyring.gpg --keyserver keyserver.ubuntu.com --recv-key $KEY16 \
  && gpg --export --no-default-keyring --keyring /tmp/keyring.gpg --output /tmp/$KEY16.gpg 

### Or ###
export GNUPGHOME=$(mktemp -d)
gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys $KEY16

write this prompt for Cline AI-agent:

@/src/schemas/note.ts @/src/services/note-manager.ts

create a schema and message manager like note.ts.
Messages will be between the Telegram user (that's @/src/schemas/user.ts) and an AI-agent.

“A Toolkit for Computation on GPUs”. Ian Buck and Tim Purcell. In GPU Gems. Randy Fernando, ed. 2004
2003-04-11 Mark Harris page cs.unc.edu/~harrism/gpgpu
2015-05-02 Mark Harris - "A Brief History of General-Purpose Computation on GPUs"
- at 3:43 a slide titled "The first GPGPU: IKONAS RDS-3000" shows
  - an ad saying "The GRAPHICS SYSTEM for the 80's"
  - 1978 Nick Englund & Mary Whitton founded Ikonas Graphics System
  - 1985 Video "All computation is taking place in the Adage 3000 Display"
  - (SIGGRAPH '86) Time Van Hook wrote microcode for solid modeling, ray tracing
UNC Pixel Planes and PixelFlow

Veritasium/Perimeter Institute

2025-04-07 What Everyone Gets Wrong About AI and Learning – Derek Muller Explains

why no revolution in 100 years? (Edison, Radio, TV, Khan, MOOC..)
Effort is The Algorithm
Inspiring teacher ??
15:28 The Magical Number Seven, Plus or Minus Two. Some Limits on Our Capacity for Processing Information. George A. Miller, 1955

Implications for Education 26:42

26:48 Eliminate extraneous cognitive load: e.g. clear sound, no accent, subtitles, legible font)

JavaScript

was built in only 10 days in 1995 by a single person, Brendan Eich, who was tasked with building a simple scripting language to be used in version 2 of the Netscape browser. It was initially called LiveScript, but since the Java language was so popular at the time, the name was changed to JavaScript - although Java and JavaScript are in no way related.

For the first few years, after it was built, JavaScript was a simple scripting language to add mouseover effects and other interactivity. Those effects were being added to webpages using the <script> HTML element.

	#!/bin/sh

	if [ ! -n "$1" ]; then
	echo "No file path argument found"
	elif [ -f $1 ]; then
	b64=$(sha384sum $1 \| grep -o -E '^[a-f0-9]{96}' \| xxd -r -p \| base64)
	echo "integrity=\"sha384-${b64}\""
	else
	echo "\"$1\" not found, or is not readable"
	fi

	CIA-triad - Confidentiality, Integrity, Availability
	DAO - Decentralized Automous Org
	DeFi - Decentralized Finance
	DON - Decentralized Oracle Network
	OCR - Off-Chain Reporting
	Rollup - Off-Chain Txn Bundler
	TEF - Transaction Execution Framework
	VRF - Verifiable Random Function

	sudo apt install fscrypt libpam-fscrypt
	# encrypt only filesytem with /home (it may be in '/' filesystem)
	FileSystem=$(grep -E ' (/home\|/) ' /proc/mounts \| grep -o '^[^ ]*')
	getconf PAGE_SIZE # 4096
	# TODO check Ext2/Ext3 (FSFS, UBIFS ??)
	sudo tune2fs -l $FileSystem \| grep 'Block size'
	sudo tune2fs -O encrypt $FileSystem
	sudo fscrypt setup
	sudo pam-auth-update

	apt-cache policy systemd-homed
	# systemd-homed: Candidate: 255.4-1ubuntu8.4

	sudo apt install systemd-homed
	# The following NEW packages installed: systemd-homed systemd-userdbd

	sudo homectl --real-name=ZM \
	--uid=60131 \
	--kill-processes=false \
	--member-of=docker,dip,lpadmin,plugdev,ops,sudo,users,wireshark \