ktheory

#!/usr/bin/env ruby

def slow_fib(n)
  case n
  when 0, 1
    1
  else
    slow_fib(n-1) + slow_fib(n-2)
  end
end

ktheory

#!/usr/bin/env ruby

require 'rubygems'
require 'nokogiri'
require 'net/http'

# check_aws_status.rb
# A nagios plugin for fetching RSS feeds from http://status.aws.amazon.com.
# Source: https://gist.github.com/1604786
# Written by Aaron Suggs: https://github.com/ktheory

ktheory

[Wed, 11 Jan 2012 17:02:10 +0000] INFO: Processing service[nagios-nrpe-server] action enable (nagios::client line 63)
[Wed, 11 Jan 2012 17:02:10 +0000] INFO: Processing nagios_nrpecheck[check_load] action add (nagios::client line 69)
[Wed, 11 Jan 2012 17:02:10 +0000] INFO: Adding check_load to /etc/nagios/nrpe.d/
[Wed, 11 Jan 2012 17:02:10 +0000] INFO: Processing template[/etc/nagios/nrpe.d/check_load.cfg] action create (/var/chef/cache/cookbooks/nagios/providers/nrpecheck.rb line 23)

...


[Wed, 11 Jan 2012 17:02:10 +0000] INFO: template[/etc/nagios/nrpe.d/check_load.cfg] sending restart action to service[nagios-nrpe-server] (delayed)
[Wed, 11 Jan 2012 17:02:10 +0000] ERROR: Running exception handlers

ktheory

def to_yaml( opts = {} )
  YAML::quick_emit( self, opts ) do |out|
    out.map( taguri, to_yaml_style ) do |map|
      map.add( 'id', self.id )
    end
  end
ende

ktheory

# In your ~/.bashrc:
do_rake () {
  if [ -e Gemfile ]; then
    bundle exec rake $@
  else
    rake $@
  fi
}
alias rake='do_rake'

ktheory

@posts.each do |post|
  post.body
else
  "No posts"
end

ktheory

#!/usr/bin/env ruby

require 'em-proxy'

Proxy.start(:host => "0.0.0.0", :port => 3000) do |conn|
  conn.server :fast, :host => '127.0.0.1', :port => 3001
  conn.server :slow, :host => '127.0.0.1', :port => 3002
  conn.on_data do |data|
    data
  end

ktheory

xml = %{
<doc>
  <key1>value1</key1>
  <key2>
Value with
line breaks
</key2>
</doc>
}

ktheory

Instrument Fog Requests in Rails

This code adds debug statements to the rails log for each fog reqests (similar to how active record shows SQL queries):

Fog AWS Compute Request (803.0ms)  [ {"Action"=>"DescribeInstances", ...} ]

The end of the request includes cumulative Fog info:

Completed 200 OK in 6043ms (Views: 2955.0ms | ActiveRecord: 319.9ms | Fog: 1642.6ms, 4 reqs)

ktheory

# Bash tab-completion for homebrew (https://github.com/mxcl/homebrew)

###############
# Installation:

# mkdir ~/.bash_completion.d
# curl https://gist.github.com/raw/774554/brew_completer.sh > ~/.bash_completion.d/brew_completer.sh
# echo 'source ~/.bash_completion.d/brew_completer.sh' >> ~/.bashrc
# source ~/.bashrc