halferty’s gists

halferty / strace.sh

Created March 24, 2015 20:17

Strace for stg APIs

	# Watch incoming connections with a given string

	strace -f -e trace=network -s 100000 -p <pid> 2>&1 \| grep --line-buffered <string> -a4 -b4

halferty / monkey_patching.rb

Last active August 29, 2015 14:17

Monkey patching

	class Object
	def if?(method_symbol=nil, &block)
	if method_symbol.is_a?(Symbol)
	(self.send(method_symbol))? self : nil
	else
	(yield(self))? self : nil
	end
	end

	def unless?(method_symbol=nil, &block)

halferty / recursively_expand_erb_files

Created March 25, 2015 06:47

Recursively expand ERB files

	#!/usr/bin/env ruby

	require 'erb'

	Dir.glob("*/.erb").each do \|erb_file\|
	File.write(erb_file.sub(/\.erb/, ''), ERB.new(File.read(erb_file)).result)
	end

halferty / untitled.sh

Created March 25, 2015 21:23

Don't be a sucker and use JVM 1.8 on OS X

alias with-sensible-jvm='JAVA_HOME="`/usr/libexec/java_home -v '1.6*'`" $@'

halferty / main.c

Created March 28, 2015 17:02

Truly minimal OpenGL example

	#include "stdafx.h"
	#include <GL/gl.h>
	#include <GL/glu.h>
	#define MAX_LOADSTRING 100
	HINSTANCE hInstance;
	HWND hWnd;

	LONG WINAPI WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
	static PAINTSTRUCT ps;
	switch (uMsg) {

halferty / main.c

Created March 29, 2015 08:03

OpenGL win32 multi-window example

	#include "stdafx.h"
	#include <windows.h>
	#include <GL/gl.h>
	#include <GL/glu.h>
	#define MAX_LOADSTRING 100
	HINSTANCE hInstance;
	HWND hWnd, hWnd2;

	struct WindowData {
	HWND window;

halferty / ledripple.ino

Created May 4, 2015 22:01

Radioshack RGB LED strip Ripple color change test with IR remote control

	#include <avr/pgmspace.h>
	#include <IRremote.h>
	#include <IRremoteInt.h>

	#define DATA_1 (PORTC \|= 0X01)
	#define DATA_0 (PORTC &= 0XFE)
	#define STRIP_PINOUT (DDRC=0xFF)
	#define NOP __asm__("nop\n\t");
	#define NOP28 NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
	#define NOP9 NOP NOP NOP NOP NOP NOP NOP NOP NOP

halferty / killify.sh

Created May 27, 2015 21:29

The development world is full of badly-behaved processes that stop responding to ctrl-c (WEBrick & jetty, I'm lookin' at you!). Make them stop with a good old fashioned kill -9.

	function killify() {
	if [ $# -ne 0 ]; then
	kill -9 `ps auxww \| grep "$@" \| grep -v grep \| tr -s ' ' \| cut -d' ' -f 2`
	fi
	}

halferty / gist:e93fbd4bc4784a2b7845

Created May 28, 2015 22:16

Trim logfiles

	~ »wc -l test.txt
	23759 test.txt
	~ »function truncate() { echo "`tail -n100 $1`" > $1; }; truncate test.txt
	~ »wc -l test.txt
	100 test.txt
	~ »

halferty / 001

Last active August 29, 2015 14:23

c code wrapped in bash script for quickly testing stuff.

	#!/bin/bash
	rm -f tempfifo1
	rm -f a.out
	mkfifo tempfifo1 2>/dev/null
	cat << EOF > tempfifo1 &

	#include <stdio.h>
	int main(int argc, char ** argv) {
	printf("Hello, world!\n");
	return 0;

EH halferty