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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

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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

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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

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#!/usr/bin/env python3
from hashlib import sha256
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"""
    prefix_bytes = subnet.network_address.packed
    mask_bytes = subnet.netmask.packed

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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?

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#!/bin/bash
set -e
BASE="/var/lib/machines"
ZDATA="rpool/machines"

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

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// 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

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#!/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):

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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 

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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