Arti Zirk artizirk

ISC dhclient IPv6 prefix delegation hook script

Based on this https://gist.github.com/jayeye/689cb1de2275798659c58c62ab92cfaa

#!/usr/bin/env python3

import ipaddress
import os
import sys

Based on this https://developer.atlassian.com/server/jira/platform/oauth/

generate private key

openssl genrsa -out jira_privatekey.pem 1024

generate public key

openssl req -newkey rsa:1024 -x509 -key jira_privatekey.pem -out jira_publickey.cer -days 365
openssl pkcs8 -topk8 -nocrypt -in jira_privatekey.pem -out jira_privatekey.pcks8

This uses Linux kernel dyamic debug features

https://www.kernel.org/doc/html/latest/admin-guide/dynamic-debug-howto.html

This asumes that debugfs is mounted under /sys/kernel/debug

Enable WireGuard debug

echo 'module wireguard +p' | sudo tee /sys/kernel/debug/dynamic_debug/control

PostgreSQL optimize

ZFS Config

atime = off  # Recoding access time on file open is stupid
relatime = on  # writing access time on file write is fine because we are writing anyway.
compression = lz4  # Its faster to compress/decompress on the CPU than it is to wait for the data from HDD/SSD  
recordsize = 128K  # postgres native 8k will give give horrible compression ratio, default 128k is fine
primarycache = metadata # maybe?

Resources

macOS install itself is quite easy using OSX-KVM scripts

Virtual Intel GPU GVT-g stuff

igpu setup is quite easy by following instructions on Arch Linux wiki

https://wiki.archlinux.org/index.php/Intel_GVT-g

	#!/usr/bin/env python3
	# need at least python3.6+ for blake2
	from base64 import b64decode
	from hashlib import sha256, blake2s
	from ipaddress import ip_address, ip_network


	# https://github.com/chmduquesne/wg-ip
	def gen_ip(pubkey, subnet=ip_network('fe80::/64')):
	"""Generate wg-ip compatible addresses from WireGuard public key.

	#!/bin/bash
	set -euo pipefail

	DEFAULT_SUITE="bookworm"
	BASE="/var/lib/machines"
	ZDATA="rpool/machines"

	if [[ $EUID -ne 0 ]]; then
	echo "This script must be run as root" 1>&2
	exit 1

	// the setup function runs once when you press reset or power the board
	void setup() {
	// seadista kõik 10 pinni arduino peal väljunditeks
	for (int i=2; i<13; i++){
	pinMode(i, OUTPUT);
	}

	}

	// the loop function runs over and over again forever

	#!/usr/bin/python3

	c_per_line = 4

	text = """
	What you're referring to as Linux, is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux.
	""".strip().upper().replace(".", "").replace("\n", '')

	print("64 32 16 8 4 2 1 "*c_per_line)
	for word_nr, word in enumerate(text.split(" "), start=1):

	sudo lsusb -d 0bda:0165 -v

	Bus 005 Device 069: ID 0bda:0165 Realtek Semiconductor Corp.
	Device Descriptor:
	bLength 18
	bDescriptorType 1
	bcdUSB 2.00
	bDeviceClass 0
	bDeviceSubClass 0
	bDeviceProtocol 0