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vikrum / Png2Json.java
Created February 11, 2013 23:04
Quick hack to dump an image to JSON.
package com.firebase.sandbox;
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import org.json.JSONObject;
public class Png2Json {
public static void main(String[] args) {
@vikrum
vikrum / sak.sh
Created February 4, 2013 22:38
Oh, don't mind me, I'm just running roughshod over your processes.
#!/bin/bash
#
# seek and kill a mem hog fork()'d child
#
SEEK="stud"
SNOOZE="6000"
while [ : ]; do
echo Snoozing for $SNOOZE
@vikrum
vikrum / bandwidth.pl
Last active December 11, 2015 14:08
display linux interface bandwidths on a regular interval (http://arctic.org/~dean/scripts/bandwidth) Modified to: 1) include aggregates; 2) average packet sizes; and, 3) scaled totals.
#!/usr/bin/perl -w
# display linux interface bandwidths on a regular interval
# dep: yum -y install perl-Time-HiRes
# Copyright (c) 2005 Dean Gaudet <dean@arctic.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
@vikrum
vikrum / gist:4005258
Created November 3, 2012 00:36
Various distributions of the alphabet
var naturalDist = "abcdefghiklmnopqrstuvwxyz";
var scrabbleDist = "aaaaaaaaabbccddddeeeeeeeeeeeeffggghhiiiiiiiiijkllllmmnnnnnnooooooooppqrrrrrrssssttttttuuuuvvwwxyyz";
var englishDist = "aaaaaaaabbcccddddeeeeeeeeeeeefffgghhhhhhiiiiiiijkllllmmnnnnnnnooooooooppqrrrrrrssssssstttttttttuuuvwwwxyyz";
@vikrum
vikrum / twitter-jvm.sh
Created July 2, 2012 21:57
Twitter's JVM startup template
# Courtesy @marius, April 2012
#
# "Our most common type of system are mostly stateless, high volume,
# low latency RPC systems. For these, we generally use this template:"
HEAP_OPTS="-Xmx17G -Xms17G -XX:NewSize=15G -XX:+UseNUMA"
GC_OPTS="-XX:+UseConcMarkSweepGC -XX:SurvivorRatio=40 -XX:+CMSScavengeBeforeRemark"
GC_LOG_OPTS="-verbosegc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps -XX:+PrintTenuringDistribution -XX:+PrintHeapAtGC"
GC_LOG="-Xloggc:/var/log/$APP_NAME/gc.log"
DEBUG_OPTS="-XX:ErrorFile=/var/log/$APP_NAME/java_error%p.log"
@vikrum
vikrum / LockOnLocksOnLocks.java
Created May 2, 2012 19:08
Locks On Locks On Locks
package sandbox;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import org.apache.commons.lang3.time.StopWatch;
public class LockOnLocksOnLocks {
@vikrum
vikrum / websocketplayground.html
Created October 12, 2011 21:41
Quick, dirty, in-browser websocket playground
<!DOCTYPE html>
<html lang="en">
<head>
<title>websocket playground</title>
<meta charset="utf-8">
<meta name="description" content="Quick, dirty, and in-browser websocket playground">
<meta name="author" content="@vikrum5000">
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/1.3.0/bootstrap.min.css">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<style type="text/css">
@vikrum
vikrum / Base64-2.3.7-MIT.java
Created September 18, 2014 17:49
iHarder Base64 — MIT licensed by author via email Sept. 2014
/**
* <p>
* This file is licensed under the MIT License as read at
* http://www.opensource.org/licenses/mit-license.php
* and reproduced here:</p>
*
* <blockquote>Copyright (c) 2009 Robert Harder.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
@vikrum
vikrum / dcurl.sh
Last active August 29, 2015 14:04
curl debug
curl -so /dev/null -w "url_effective = %{url_effective}\n http_code = %{http_code}\n http_connect = %{http_connect}\n time_total = %{time_total}\n time_namelookup = %{time_namelookup}\n time_connect = %{time_connect}\n time_appconnect = %{time_appconnect}\n time_pretransfer = %{time_pretransfer}\n time_redirect = %{time_redirect}\n time_starttransfer = %{time_starttransfer}\n size_download = %{size_download}\n size_upload = %{size_upload}\n size_header = %{size_header}\n size_request = %{size_request}\n speed_download = %{speed_download}\n speed_upload = %{speed_upload}" https://zzz
@vikrum
vikrum / spin.c
Created April 1, 2014 18:03
Terminal screensaver/session activity bumper thing.
/* .. spin ..
*
* $ gcc spin.c -o spin -lncurses -Wall -O3
*
* vsn - 2006
*/
#include <stdlib.h> // srand
#include <time.h> // time
#include <string.h>