84adam’s gists

84adam / check-namespaces.sh

Created June 4, 2024 13:53

check namespaces plus associated processes and users

	#!/bin/bash

	echo "Listing processes and their associated user namespaces:"

	for pid in $(ls /proc \| grep '^[0-9]*$'); do
	if [ -e /proc/$pid/ns/user ]; then
	# Get the process command line
	cmdline=$(cat /proc/$pid/cmdline \| tr '\0' ' ')

	# Get the process owner

84adam / bash_c_example.sh

Created May 9, 2024 17:12

Bash-C Hello World: Compile and run a C program from a single Bash script

	#!/bin/bash
	# bash_c_example.sh

	# Directory to store the C source file and the executable
	EXAMPLES_DIR="$HOME/bash_c_examples"

	# Ensure the directory exists, create it if not
	mkdir -p "$EXAMPLES_DIR"

	# Check if hello_world.c and hello_world executable already exist

84adam / bcrypt-argon2-pbkdf2-hash-test.py

Last active May 7, 2024 14:24

bcrypt/argon2/pbkdf2 hash test -- target a work factor that requires at least 250 ms to compute

	# bcrypt-argon2-pbkdf2-hash-test.py

	import threading
	import bcrypt
	from pwdlib.hashers import argon2
	from pwdlib import PasswordHash
	from pwdlib.hashers.argon2 import Argon2Hasher
	from hashlib import pbkdf2_hmac
	import time
	import psutil

84adam / lnd-postgres-kv-decoder.py

Created February 23, 2023 04:58

Decode Keys/Values from Postgres LND Database

	# lnd-postgres-kv-decoder.py

	from decouple import config
	import psycopg2
	import psycopg2.extras
	import pandas as pd
	import time

	tables = ['channeldb_kv', 'decayedlogdb_kv', 'macaroondb_kv',
	'towerclientdb_kv', 'towerserverdb_kv', 'walletdb_kv']

84adam / postgres-separators.txt

Created January 4, 2023 21:27

PostgreSQL: format multiple columns into string for each row using a semicolon as separator between fields

	### PostgreSQL: format multiple columns into string for each row using a semicolon as separator between fields

	```
	SELECT
	FORMAT('%s; %s; %s; %s',
	col_one, col_two, col_three, col_four)
	AS entries
	FROM table_name;
	```

84adam / i2pd.service

Last active December 21, 2022 14:39

i2pd.service: control/unit file, systemd service definition

	[Unit]
	Description=I2P Router written in C++
	Documentation=man:i2pd(1) https://i2pd.readthedocs.io/en/latest/
	After=network.target
	ConditionFileIsExecutable=/usr/sbin/i2pd

	[Service]
	User=i2pd
	Group=i2pd
	RuntimeDirectory=i2pd

84adam / bitcoin-inflation.py

Created October 20, 2022 16:44

Calculate future bitcoin supply and inflation

	# bitcoin-inflation.py
	# based on: https://github.com/ndsvw/Bitcoin-Supply-Calculator/blob/master/btcsupply.py

	def btc_supply_at_block(b):
	max_supply = 20999999.9769
	if b >= 33 * 210000:
	return max_supply, 1.0
	else:
	reward = 50e8
	supply = 0

84adam / tips.txt

Created October 17, 2022 17:16

Python Clean Code Tips & Tools

	### Python Clean Code Tips & Tools

	Check the quality of your code inside your CI pipeline.

	- flake8 - style guide enforcer
	- black - code formatting
	- isort - optimize imports
	- bandit - check for security vulnerabilities
	- safety - check for security vulnerabilities of dependencies

84adam / main.go

Created October 16, 2022 16:37

Simple Go Website

	// a simple Go-based website
	// based on: https://www.digitalocean.com/community/tutorials/how-to-make-an-http-server-in-go
	// with 100 bytes of CSS from: https://gist.github.com/JoeyBurzynski/617fb6201335779f8424ad9528b72c41

	package main

	import (
	"errors"
	"fmt"
	"io"

84adam / progress-compaction.sh

Last active November 16, 2022 17:20

Monitor Esplora/Electrs compaction process

	#!/bin/bash
	MOUNTPOINT="/mnt/ext"
	DISK="/dev/sda1"

	echo ""
	echo "-------------------------------------------------------------------------------- DISK SPACE USED/REMAINING"
	df -m \| head -n 1 ; df -m \| grep "$DISK"
	df -H \| head -n 1 ; df -H \| grep "$DISK"
	echo "-------------------------------------------------------------------------------- DISK I/O"
	echo ""

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