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@kconner
kconner / macOS Internals.md
Last active June 27, 2024 18:48
macOS Internals

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

@lizthegrey
lizthegrey / attributes.rb
Last active February 24, 2024 14:11
Hardening SSH with 2fa
default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'
@ixdy
ixdy / yubikey4-ssh-macos.md
Last active April 12, 2024 20:19
Setting up ssh public key authentication on macOS using a YubiKey 4

Setting up ssh public key authentication on macOS using a YubiKey 4

I largely followed Florin's blog post, but have a few notes to add regarding issues I encountered:

Basic setup notes

  1. I used a YubiKey 4, while the blog describes using a YubiKey NEO. I'm sure a YubiKey 5 would also work. I'm also running macOS 10.13.6.
  2. I installed GPGTools as recommended. However, as I'll note later, it seems that gpg-agent only automatically starts when gpg is used; for ssh, you'll need to ensure it's running.
  3. Before generating your keys, decide what key size you want to use. If you run the list command inside gpg --edit-card, look for the Key attributes line to see what is currently selected. On my YubiKey 4, it defaulted to 2048 bits for all keys:
Key attributes ...: rsa2048 rsa2048 rsa2048
@mr337
mr337 / ssl_checker.py
Created September 27, 2018 17:46
Utility script to help check a list of domains in Route53 to determine if they use HTTPs and if their certificate will expire in less than 30 days
#! /usr/bin/env python
import datetime
import socket
import ssl
import boto3
r53 = boto3.client('route53')
@gabeio
gabeio / zstd.cs
Created September 11, 2017 15:44 — forked from dimzon/zstd.cs
zstd streaming api wrapper
using System;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Runtime.InteropServices;
namespace ZstdCompression
{
public static class Zstd
{
@mgoodness
mgoodness / k8s-svc-annotations.md
Last active March 11, 2024 16:24
AWS ELB-related annotations for Kubernetes Services (as of v1.12.0)
  • service.beta.kubernetes.io/aws-load-balancer-access-log-emit-interval (in minutes)
  • service.beta.kubernetes.io/aws-load-balancer-access-log-enabled (true|false)
  • service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-name
  • service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-prefix
  • service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags (comma-separated list of key=value)
  • service.beta.kubernetes.io/aws-load-balancer-backend-protocol (http|https|ssl|tcp)
  • service.beta.kubernetes.io/aws-load-balancer-connection-draining-enabled (true|false)
@gabeio
gabeio / .vimrc
Last active December 23, 2017 06:03
Default Vim Settings
syntax on
"execute pathogen#infect() "optional
set nocompatible
set backspace=2
set ignorecase
set smartcase
set autoindent
set number "show line numbers
set ruler "show ruler
set relativenumber "show relative line numbers
@sdieunidou
sdieunidou / rabbitmq.txt
Created October 22, 2015 19:51
create admin user on rabbitmq
rabbitmqctl add_user test test
rabbitmqctl set_user_tags test administrator
rabbitmqctl set_permissions -p / test ".*" ".*" ".*"
@patshaughnessy
patshaughnessy / gist:70519495343412504686
Last active April 28, 2024 01:19
How to Debug Postgres using LLDB on a Mac
This note explains how to build Postgres from source and setup to debug it using LLDB on a Mac. I used this technique to research this article:
http://patshaughnessy.net/2014/10/13/following-a-select-statement-through-postgres-internals
1. Shut down existing postgres if necessary - you don’t want to mess up your existing DB or work :)
$ ps aux | grep postgres
pat 456 0.0 0.0 2503812 828 ?? Ss Sun10AM 0:11.59 postgres: stats collector process
pat 455 0.0 0.0 2649692 2536 ?? Ss Sun10AM 0:05.00 postgres: autovacuum launcher process
pat 454 0.0 0.0 2640476 304 ?? Ss Sun10AM 0:00.74 postgres: wal writer process
pat 453 0.0 0.0 2640476 336 ?? Ss Sun10AM 0:00.76 postgres: writer process
@whoshuu
whoshuu / curlget.cpp
Created March 31, 2015 06:44
Example libcurl GET request
#include <curl/curl.h>
#include <string>
size_t writeFunction(void *ptr, size_t size, size_t nmemb, std::string* data) {
data->append((char*) ptr, size * nmemb);
return size * nmemb;
}
int main(int argc, char** argv) {
auto curl = curl_easy_init();