cnauroth

> curl 'http://172.20.11.177:50070/jmx?qry=Hadoop:service=NameNode,name=NameNodeStatus'
{
  "beans" : [ {
    "name" : "Hadoop:service=NameNode,name=NameNodeStatus",
    "modelerType" : "org.apache.hadoop.hdfs.server.namenode.NameNode",
    "State" : "active",
    "NNRole" : "NameNode",
    "HostAndPort" : "localhost:19000",
    "SecurityEnabled" : false,
    "LastHATransitionTime" : 0

cnauroth

#!/bin/bash

# Enter XML as a heredoc, pipe it to xmllint, and run an XPath query.

cat <<EOF | xmllint --xpath /catalog/product[@type=\"cloths\"] -
<?xml version="1.0"?>
<!DOCTYPE catalog SYSTEM "catalog.dtd">
<catalog>
   <product type="cloths" product_image="cardigan.jpg">
      <catalog_item gender="Men's">

cnauroth

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

#export JAVA_HOME=/etc/alternatives/java_sdk_1.7.0_openjdk

cnauroth

{
    "javaType": "model.Game",
    "properties": {
        "data": {
            "id": "data",
            "properties": {
                "about_the_game": {
                    "id": "about_the_game",
                    "type": "string"
                },

cnauroth

// This causes certain versions of the JVM to enter an infinite loop.
// For more details, see:
// http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308/
// http://www.exploringbinary.com/fpupdater-fixes-the-java-2-2250738585072012e-308-bug/

public class JavaFloatingPointBug {
    public static void main(String[] args) {
        System.out.println("Test:");
        double d = Double.parseDouble("2.2250738585072012e-308");
        System.out.println("Value: " + d);