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@moyix
moyix / killbutmakeitlooklikeanaccident.sh
Created February 5, 2022 22:51
Script to inject an exit(0) syscall into a running process. NB: only x86_64 for now!
#!/bin/bash
gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'
@joepie91
joepie91 / no-your-cryptocurrency-cannot-work.md
Last active April 13, 2024 03:21
No, your cryptocurrency cannot work

No, your cryptocurrency cannot work

Whenever the topic of Bitcoin's energy usage comes up, there's always a flood of hastily-constructed comments by people claiming that their favourite cryptocurrency isn't like Bitcoin, that their favourite cryptocurrency is energy-efficient and scalable and whatnot.

They're wrong, and are quite possibly trying to scam you. Let's look at why.

What is a cryptocurrency anyway?

There are plenty of intricate and complex articles trying to convince you that cryptocurrencies are the future. They usually heavily use jargon and vague terms, make vague promises, and generally give you a sense that there must be something there, but you always come away from them more confused than you were before.

@WisdomSky
WisdomSky / README.md
Last active September 25, 2023 15:47
Signal Server Installation v1.88 Full Guide

# Requirements

  • Java 11
  • Maven
  • Redis
  • PostgreSQL
@hoodunit
hoodunit / Main.purs
Created June 27, 2018 13:46
RevealJS with PureScript Halogen hack
appComponent :: forall m. H.Component HH.HTML Query Unit Void m
appComponent = H.component
{ initialState: const {}
, render
, eval
, receiver: const Nothing
}
render :: State -> H.ComponentHTML Query
@marcosh
marcosh / Application.hs
Created June 14, 2018 13:20
Web applications as profunctors
module Application where
import Data.Profunctor
newtype Application request response = Application {unApplication :: request -> IO response}
instance Profunctor Application where
dimap actOnRequest actOnResponse application = Application $ (fmap actOnResponse) . (unApplication application) . actOnRequest
@ErikAugust
ErikAugust / spectre.c
Last active April 15, 2024 13:55
Spectre example code
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef _MSC_VER
#include <intrin.h> /* for rdtscp and clflush */
#pragma optimize("gt",on)
#else
#include <x86intrin.h> /* for rdtscp and clflush */
#endif
@mosquito
mosquito / README.md
Last active May 4, 2024 12:42
Add doker-compose as a systemd unit

Docker compose as a systemd unit

Create file /etc/systemd/system/docker-compose@.service. SystemD calling binaries using an absolute path. In my case is prefixed by /usr/local/bin, you should use paths specific for your environment.

[Unit]
Description=%i service with docker compose
PartOf=docker.service
After=docker.service
@briansmith
briansmith / how-to-generate-and-use-private-keys-with-openssl-tool.md
Last active April 11, 2024 17:02
How to generate & use private keys using the OpenSSL command line tool

How to Generate & Use Private Keys using OpenSSL's Command Line Tool

These commands generate and use private keys in unencrypted binary (not Base64 “PEM”) PKCS#8 format. The PKCS#8 format is used here because it is the most interoperable format when dealing with software that isn't based on OpenSSL.

OpenSSL has a variety of commands that can be used to operate on private key files, some of which are specific to RSA (e.g. openssl rsa and openssl genrsa) or which have other limitations. Here we always use

@cryzed
cryzed / fix-infinality.md
Last active April 30, 2024 22:01
A set of instructions on how to fix the harfbuzz + Infinality issue and restoring good-looking, Infinality-like font rendering.

Disclaimer: Please follow this guide being aware of the fact that I'm not an expert regarding the things outlined below, however I made my best attempt. A few people in IRC confirmed it worked for them and the results looked acceptable.

Attention: After following all the steps run gdk-pixbuf-query-loaders --update-cache as root, this prevents various gdk-related bugs that have been reported in the last few hours. Symptoms are varied, and for Cinnamon the DE fails to start entirely while for XFCE the icon theme seemingly can't be changed anymore etc.

Check the gist's comments for any further tips and instructions, especially if you are running into problems!

Screenshots

Results after following the guide as of 11.01.2017 13:08: