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@zaius
zaius / background.sh
Created January 16, 2011 23:29
How to redirect a running process output to a file and log out
ctrl-z
bg
touch /tmp/stdout
touch /tmp/stderr
gdb -p $!
# In GDB
p dup2(open("/tmp/stdout", 1), 1)
p dup2(open("/tmp/stderr", 1), 2)
@yohhoy
yohhoy / threads.h
Last active September 25, 2024 12:28
C11 <threads.h> emulation library
/*
* C11 <threads.h> emulation library
*
* (C) Copyright yohhoy 2012.
* Distributed under the Boost Software License, Version 1.0.
* (See copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef EMULATED_THREADS_H_INCLUDED_
#define EMULATED_THREADS_H_INCLUDED_
@BrockA
BrockA / waitForKeyElements.js
Created May 7, 2012 04:21
A utility function, for Greasemonkey scripts, that detects and handles AJAXed content.
/*--- waitForKeyElements(): A utility function, for Greasemonkey scripts,
that detects and handles AJAXed content.
Usage example:
waitForKeyElements (
"div.comments"
, commentCallbackFunction
);
@iso2022jp
iso2022jp / base94.c
Created November 11, 2012 09:05
base94 encoder/decoder
#include "base94.h"
void base94_encode(const unsigned char *plain, unsigned char *code) {
// high * 2^64 | low
unsigned long long value
= ((unsigned long long)plain[1] << 56) | ((unsigned long long)plain[2] << 48)
| ((unsigned long long)plain[3] << 40) | ((unsigned long long)plain[4] << 32)
@rcoup
rcoup / rsync_parallel.sh
Created April 10, 2013 21:52
Parallel-ise an rsync transfer when you want multiple concurrent transfers happening,
#!/bin/bash
set -e
# Usage:
# rsync_parallel.sh [--parallel=N] [rsync args...]
#
# Options:
# --parallel=N Use N parallel processes for transfer. Defaults to 10.
#
# Notes:
@mojodna
mojodna / binary-splitter.js
Last active June 19, 2018 04:17
Some random Node.js stream classes.
"use strict";
var stream = require("stream"),
util = require("util");
var buffertools = require("buffertools");
var BinarySplitter = function(delimiter) {
stream.Transform.call(this);
@karlgluck
karlgluck / Hash Ladders for Shorter Lamport Signatures.md
Last active March 31, 2024 17:53
I describe a method for making Lamport signatures take up less space. I haven't seen anyone use hash chains this way before, so I think it's pretty cool.

What's this all about?

Digital cryptography! This is a subject I've been interested in since taking a class with Prof. Fred Schneider back in college. Articles pop up on Hacker News fairly often that pique my interest and this technique is the result of one of them.

Specifically, this is about Lamport signatures. There are many signature algorithms (ECDSA and RSA are the most commonly used) but Lamport signatures are unique because they are formed using a hash function. Many cryptographers believe that this makes them resistant to attacks made possible by quantum computers.

How does a Lamport Signature work?

@iamnewton
iamnewton / bash-colors.md
Last active November 5, 2024 23:43
The entire table of ANSI color codes.

Regular Colors

Value Color
\e[0;30m Black
\e[0;31m Red
\e[0;32m Green
\e[0;33m Yellow
\e[0;34m Blue
\e[0;35m Purple
@davidvthecoder
davidvthecoder / round.go
Created April 9, 2014 19:58
Arggh Golang does not include a round function in the standard math package. So I wrote a quick one.
package main
import (
"log"
"math"
)
func Round(val float64, roundOn float64, places int ) (newVal float64) {
var round float64
pow := math.Pow(10, float64(places))
@Bomret
Bomret / gist:0a130778ffbe3a3f0322
Last active March 23, 2022 15:10
Windows batch with UAC prompt
@echo off
REM credits: https://sites.google.com/site/eneerge/scripts/batchgotadmin
REM Stored here in case that site goes down some day
:: BatchGotAdmin
:-------------------------------------
REM --> Check for permissions
>nul 2>&1 "%SYSTEMROOT%\system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"
REM --> If error flag set, we do not have admin.