jpedro

// Requires GNU C23: GCC >= 15 or Clang >= 21
#include <stddef.h>
#include <string.h>

#define affirm(c)       while (!(c)) unreachable()
#define lenof(a)        (iz)(sizeof(a) / sizeof(*(a)))
#define new(a, n, t)    (t *)alloc(a, n, sizeof(t), _Alignof(t))
#define maxof(t)        ((t)-1<1 ? (((t)1<<(sizeof(t)*8-2))-1)*2+1 : (t)-1)
#define S(s)            (Str){(u8 *)s, lenof(s)-1}

jpedro

#!/bin/bash

# Source: https://docs.aws.amazon.com/general/latest/gr/sigv4-signed-request-examples.html

[[ -n "${AWS_ACCESS_KEY_ID}" ]]     || { echo "AWS_ACCESS_KEY_ID required" >&2; exit 1; }
[[ -n "${AWS_SECRET_ACCESS_KEY}" ]] || { echo "AWS_SECRET_ACCESS_KEY required" >&2; exit 1; }

readonly parameterName="SlawekTestParam"

readonly method="POST"

jpedro

Common Layouts

Creating common layouts With Tailwind using css grid & Flex box.

• CSS Grid: for the main page layout (header, main content, sidebar, footer)

jpedro

# This is a shell archive.  Remove anything before this line, then
# unpack it by saving it in a file and typing "sh file".  (Files
# unpacked will be owned by you and have default permissions.)
#
# This archive contains:
# Makefile ping.1 ping.c ping.shar newping.1 newping.c

echo x - Makefile
cat > "Makefile" << '//E*O*F Makefile//'

jpedro

#!/usr/bin/env bash
set -uo pipefail

STATUS_CHUNKS="${STATUS_CHUNKS:-10}"

URL="${1:-}"
if [[ "$URL" == "" ]]
then
    echo >&2 "Usage: $0 URL"
    exit 1

jpedro

import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

public class HelloWorld{
	private static HelloWorld instance;
    public static void main(String[] args){
        instantiateHelloWorldMainClassAndRun();

jpedro

#!/usr/local/bin/lua

function T(l, v, r)
	return {left = l, value = v, right = r}
end

function visit(t)
	if t ~= nil then  -- note: ~= is "not equal"
		visit(t.left)
		coroutine.yield(t.value)

jpedro

package main

import (
	"log"
	"net"
)

func main() {
	// listen to incoming udp packets
	pc, err := net.ListenPacket("udp", ":1053")

jpedro

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

jpedro

Host your own Tor hidden service!

A super simple guide to spinning up a Tor hidden service. [tl;dr]

Ubuntu 20.04 LTS was used for the making of this guide.

Install Tor

you can install Tor using the following command