nazariyv

1/ install ubuntu live server (skip docker here and manually post-install (during ubuntu install it will use snap socker and it's utter shit and will cause you headaches), openssh)
2/ set static ip (/etc/netplan/static.yaml):

network:
  version: 2
  renderer: networkd
  ethernets:
    <your-interface>:
      addresses:
        <your-local-static-ip>

nazariyv

import random

def int_to_privkey(n):
    hex_n = hex(n)[2:]  # convert to hexadecimal and strip the "0x" prefix
    return hex_n.rjust(64, '0')  # pad with zeros to the left until it's 64 characters long

int_to_privkey(random.randing(0, 2 ** 256 - 1))

nazariyv

Two pointers: one input, opposite ends

```python3
def fn(arr):
    left = ans = 0
    right = len(arr) - 1

    while left < right:
        # do some logic here with left and right
        if CONDITION:

nazariyv

def number_to_base(n, b):
    if n == 0:
        return [0]
    digits = []
    while n:
        digits.append(int(n % b))
        n //= b
    return digits[::-1]

nazariyv

from typing import Dict, Tuple
from brownie import accounts, chain
from dataclasses import dataclass

# ! 1. losing threshold to be set manually here
# ! 2. bids to be set manually here
# ! 3. set the account to rkl refunder account in main

# if the bid is below this value, it has lost the auction
# it is possible that there may be two bids for the same

nazariyv

import functools


def decorator(function):
    """A general decorator function"""

    @functools.wraps(function)
    def wrapper(*args, **kwargs):
        # Write decorator function logic here
        # Before function call

nazariyv

to read the logs that cron produced due to running something: cat /var/mail/$USER
to read the logs of when and if cron launched jobs: sudo cat /var/log/cron
to restart the cron service: sudo systemctl restart crond

nazariyv

# https://crontab.guru/every-5-minutes

crontab -e
sudo service crond restart
sudo cat /var/log/cron

nazariyv

The tutorials below explain how to start the IPFS node on AWS. Of note are the networking (the ports required to open) as well as
setting up the IPFS env var to persist the data:

https://medium.com/textileio/tutorial-setting-up-an-ipfs-peer-part-i-de48239d82e0
https://talk.fission.codes/t/a-loosely-written-guide-to-hosting-an-ipfs-node-on-aws/234

nazariyv

# references
# 1. https://uniswap.org/docs/v2/javascript-SDK/getting-pair-addresses/
# 2. https://ethereum.stackexchange.com/questions/90539/how-to-get-the-non-packed-soliditykeccak-hash-in-python-web3

# deps
# Python 3.9.5
# 1. eth-abi==2.1.1
# 2. web3==5.18.0