granolocks’s gists

granolocks / interesting.rb

Created April 3, 2012 16:00

Transpose + Zip == ??

	# Note, this is getting run from a Rails console.
	# The results are a bit surprising.
	t = User.last.attributes.to_a.transpose
	# This returns an Array with 2 sub-arrays containing all attribute keys and values respectively
	# => [["work_phone", ... ], ["12345678910", ...]]

	Hash[t[0].zip(t[1])] == User.last.attributes
	# => true

granolocks / ubuntu_install.sh

Created April 4, 2012 15:24

Ubuntu 11.10 install notes

	# Ubuntu 11.10 Setup Notes:
	# Note, this isn't really a script, i just called it .sh to get syntax highlighting

	# prep
	sudo apt-get update

	# setup git and ssh
	# Add key to github.
	ssh-keygen

granolocks / ifconfig.rb

Created April 23, 2012 14:26

Simple Ifconfig Parser in Ruby

	class IfconfigParser

	MAC_REGEX = /^(\S{1,2}:\S{1,2}:\S{1,2}:\S{1,2}:\S{1,2}:\S{1,2})?$/

	# NOTE: this has some slightly weird results for wlan interfaces. Really meant to be used for eth0
	def self.ifconfig(iface)
	output = Hash.new
	ifconfig_string = `ifconfig #{ iface }`
	ifconfig_string.gsub!("RX ", "RX_")
	ifconfig_string.gsub!("TX ", "TX_")

granolocks / regex.rb

Created May 3, 2012 01:30

Useful Regex

	VALID_IP_ADDRESS = /^(([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])\.){3}([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])$/

	VALID_HOSTNAME = /^(([a-zA-Z]\|[a-zA-Z][a-zA-Z0-9\-][a-zA-Z0-9])\.)([A-Za-z]\|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])$/

granolocks / multi_value_hash.rb

Created May 6, 2012 20:14

Multi-value hashes in Ruby

	# Multi-value hashes in Ruby
	# Posted on March 24, 2011
	# http://matthew.mceachen.us/blog/multi-value-hashes-in-ruby-1114.html
	# Any non-trivial project quickly finds itself needing data structures that are more exotic than simple arrays or maps. In my quest for multimap
	# nirvana, I first found references where every value-put call would need to be changed to look like this:

	h = {}
	(h[:key] \|\|= []) << "value 1"
	(h[:key] \|\|= []) << "value 2"
	puts h

granolocks / header markup.html

Created August 17, 2012 18:05

header markup.html

	<!DOCTYPE html>

	<!-- paulirish.com/2008/conditional-stylesheets-vs-css-hacks-answer-neither/ -->
	<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7" lang="en"> <![endif]-->
	<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8" lang="en"> <![endif]-->
	<!--[if IE 8]> <html class="no-js lt-ie9" lang="en"> <![endif]-->
	<!--[if gt IE 8]><!--> <html class="no-js" lang="en"> <!--<![endif]-->
	<head>
	<meta charset="utf-8" />

granolocks / age_check.sh

Created August 31, 2012 03:02

	#!/bin/sh
	# This checks that the specified file is less than 4 days old
	# deletes files that are too old

	for f in *.jpg
	do

	FILE=$f
	MAXAGE=$(bc <<< '42460*60') # seconds in a week
	#MAXAGE=$(bc <<< '60') # seconds in a minute, for testing

granolocks / app.rb

Created September 20, 2012 15:13

app.rb


	class Application < Sinatra:: Base
	def initialize
	@xinstance = 'first'
	super
	end

	get '/1' do
	@xinstance = "hit 1"
	# returns "hit 1"

granolocks / params.rb

Created September 27, 2012 16:17

shell words escape

	require 'rubygems'
	require 'sinatra'
	require 'pry'

	# run with:
	# ruby params.rb
	# test route example: http://localhost:4567/blah/blee!!;;;

	get '/:test/:test2' do
	sanitize_params

granolocks / reverse_ssh.rb

Created December 20, 2012 01:42

	require 'rubygems'
	require 'net/ssh'

	# Run this on the machine (node) which needs to tunnel out to forward the UI to the remote system (console)
	Net::SSH.start("remote_host", "remote_user") do \|ssh\|
	# since we are running sinatra locally we will forward 43210 on the remote_host to our localhost 4567
	# This is effectively the same as:
	# ssh -R 4567:localhost:43210 remote_user@remote_host
	ssh.forward.remote(4567, "localhost", 43210)
	ssh.loop { true }

Gabe Koss granolocks