spangenberg

#!/bin/sh

read -r -d '' ARP_ACCEPT <<'EOF'
help: Enable arp-accept on this interface
create:expression: "sudo sh -c \"echo 1 > /proc/sys/net/ipv4/conf/$VAR(../../@)/arp_accept\" "
delete:expression: "sudo sh -c \"echo 0 > /proc/sys/net/ipv4/conf/$VAR(../../@)/arp_accept\" "
EOF
mkdir -p /opt/vyatta/share/vyatta-cfg/templates/interfaces/ethernet/node.tag/ip/enable-arp-accept
echo $ARP_ACCEPT > /opt/vyatta/share/vyatta-cfg/templates/interfaces/ethernet/node.tag/ip/enable-arp-accept/node.def

spangenberg

/opt/vyatta/share/vyatta-cfg/templates/interfaces/ethernet/node.tag/ip/disable-arp-filter/node.def
/opt/vyatta/share/vyatta-cfg/templates/interfaces/ethernet/node.tag/ip/enable-arp-accept/node.def
/opt/vyatta/share/vyatta-cfg/templates/interfaces/ethernet/node.tag/ip/enable-arp-announce/node.def
/opt/vyatta/share/vyatta-cfg/templates/interfaces/ethernet/node.tag/ip/enable-arp-ignore/node.def

spangenberg

Keybase proof

I hereby claim:

• I am spangenberg on github.
• I am spangenberg (https://keybase.io/spangenberg) on keybase.
• I have a public key ASB1EbRUlGShmXf4hBlhlSMsW2NjCTo9_AwSjypneeUueAo

To claim this, I am signing this object:

spangenberg

n = 6 * 10_000

loop do
  hash = Hash.new { |hash, key| hash[key] = 0 }
  n.times.each { hash[rand(1..6)] += 1 }
  hash = Hash[hash.reduce({}) { |memo, (key, value)| memo[key] = value / (n / 100.0); memo }.sort]

  if hash.values.reduce(&:+) == 100.0
    hash.each { |key, value| puts "#{key} - #{value}%" }
    break

spangenberg

require "benchmark"
b = Benchmark.realtime do
  10_000_000.times.each { "HalloDasIst=EinKeyVonMir".split("=")[1] }
end
puts b

b = Benchmark.realtime do
  10_000_000.times.each { "HalloDasIst=EinKeyVonMir"[12..-1] }
end
puts b

spangenberg

module Kernel
  def null
    nil
  end
end

spangenberg

require "active_support/json"
require "benchmark"
require "edn"
require "json"

n = 1_000_000
obj = { :hallo => "wie", :get => { :es => ["dir", 2] } }

json = obj.to_json
edn = obj.to_edn

spangenberg

sudo apt-get install ldap-auth-client nscd
sudo auth-client-config -t nss -p lac_ldap
sudo pam-auth-update
sudo /etc/init.d/nscd restart

getent passwd

spangenberg

// Hello World

spangenberg

require 'aws-sdk'
require 'net/http'
require 'uri'

namespace :deploy do
  desc 'Deploy to OpsWorks'
  task :opsworks do
    unless ENV['VERSION']
      puts 'Please provide a version'
      exit(1)