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function knife-ips {
    knife search node "name:$1" -aec2.public_ipv4 | grep 'ec2.public_ipv4' | awk '{print $2}'
}

# example: knife-ips "my-node-name-prefix*"

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FROM ubuntu

MAINTAINER Andrew Hodges "[email protected]"

ENV REFRESHED_AT 2013-09-04

RUN sed 's/main$/main universe/' -i /etc/apt/sources.list
RUN apt-get update
RUN apt-get upgrade -y

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defmodule Macro do
  # ...

  def extract_expressions({ :__block__, _, exprs }), do: exprs
  def extract_expressions(nil),  do: []
  def extract_expressions(expr), do: [expr]

  # ...
end

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defmodule BitString.Example do
  import BitString

  defbitstring data_frame do
    _         :: 1
    stream_id :: 31
    flags     :: 8
    length    :: 24
    _         :: 1
    _         :: 7

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require 'fiber' # for Fiber#alive?

module Enumerable
  DEFAULT_MAX_FIBERS = 20

  def each_in_fibers(max_fibers = nil, &block)
    # If the enumerable object can tell us how big it is, cool.
    # Unlike #each_in_threads, it doesn't really matter here.
    # BUT I'M GOING TO DO THIS ANYWAY! BWAHAHAHAA!
    if respond_to? :size

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#!/bin/sh
lsof | grep facebook | awk -F'>' '{print $2}' | sort | uniq -c

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CREATE OR REPLACE VIEW table_stats AS (
SELECT t.relname AS table,
       n_live_tup AS approx_rows,
       heap_blks_read + heap_blks_hit AS reads,
       round(100 * heap_blks_hit::numeric / (heap_blks_hit + heap_blks_read + 0.0001), 3) AS cache_hit_rate,
       round(100 *  idx_blks_hit::numeric / ( idx_blks_hit +  idx_blks_read + 0.0001), 3) AS idx_cache_hit_rate,
       round(100 *      idx_scan::numeric / (     seq_scan +       idx_scan + 0.0001), 3) AS idx_usage_pct
  FROM pg_statio_user_tables AS t
  FULL OUTER
  JOIN pg_stat_user_tables

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module WithArchive
  def with_archive
    columns         = column_names
    archive_class   = const_get(:Archive)
    archive_columns = columns.map { |c| c == 'state' ? "'disabled' AS state" : c }
    from <<-sql
      (#{unscoped.select(columns.join(', ')).to_sql}
       UNION
       #{archive_class.unscoped.select(archive_columns.join(', ')).to_sql}
      ) as #{table_name}

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-module(trie).

%% Compile Options
-compile({no_auto_import, [get/2, put/2]}).

%% API
-export([get/2,
         new/0,
         put/2,
         put/3]).

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expand(Bin) ->
    expand_1(Bin, [<<>>], []).

append(C, Prefixes) ->
    lists:map(fun (Prefix) ->
                      <<Prefix/binary, C>>
              end, Prefixes).

expand_1(Bin, Prefixes, Acc) ->
    expand_1(Bin, Prefixes, Prefixes, Acc).