mike waggoner here

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like

ssh -L 3306:localhost:3306 remotehost

	#!/usr/bin/env node

	var argv = require('optimist')
	.usage('Usage: --key=[consumer key] -secret=[consumer secret]')
	.demand(['key', 'secret'])
	.argv
	;

	var OAuth = require('oauth').OAuth;
	var Step = require('step');

	var Parser = require('./jsonparse');
	var Http = require('http');
	var p = new Parser();
	// IMPORTANT, put your username and password in here
	var username = "yourTwitterUsername", password = "yourPassword";
	var client = Http.createClient(80, "stream.twitter.com");
	var request = client.request("GET", "/1/statuses/sample.json", {
	"Host": "stream.twitter.com",
	"Authorization": (new Buffer(username + ":" + password)).toString("base64")
	});

	#!/bin/bash

	SESSION=main
	tmux="tmux -2"

	# if the session is already running, just attach to it.
	$tmux has-session -t $SESSION
	if [ $? -eq 0 ]; then
	echo "Session $SESSION already exists. Attaching."
	sleep 1

	<?php
	/*
	Plugin Name: Rich Text editors for Gravity Forms
	Description: Converts the textarea fields in Gravity Forms to WordPress rich text editors
	Author: Nathaniel Taintor
	Author URI: http://goldenapplesdesign.com
	Version: 1.0
	License: GPLv2
	*/

	RewriteEngine On
	RewriteBase /

	RewriteCond %{DOCUMENT_ROOT}/static/%{REQUEST_URI} -f
	RewriteRule ^(.*)$ /static/$1 [L,QSA]

	RewriteCond %{DOCUMENT_ROOT}/static/%{REQUEST_URI}/index.html -f
	RewriteRule ^(.*)$ /static/$1/index.html [L,QSA]

	RewriteRule ^index\.php$ - [L]