cryptovisual_qr_encoder

#!/bin/bash

# This script reads text from stdin, generates its QR code and splits it into two visual cryptographic images. Both images appear random and have as many whites as blacks. Only when print on transparent film (or extremely thin paper) and superposed, the ciphered qrcode appears as gray/black dots.
# We use the program "qrencode" to generate a QR at an average 7% error-correction rate ("low" quality; the lowest available). We create then a random array and we visual-XOR it with the QR code to retrieve the ciphered code. Only the random array (nonce or one-time pad) and the ciphered array are recorded, and only when both are superposed they reveal the QR code.
# The visual-cryptographic scheme used is inspired of http://leemon.com/crypto/VisualCrypto.html . It transforms 0s and 1s into diagonal 2x2 squares (01\10 and 10\01). The visual XOR either repeats (gray superposition; corresponding to a white dot) or flips (black superposition; corresponding to a black dot), following the QR code.
# Security 

infertux

#!/bin/bash -eu

# Download, configure and install Ruby and Bundler on a Debian-family or Redhat-family fresh system
# https://gist.github.com/infertux/a5252bf8023f0a0e9380

RUBY="2.2.2"
SHA256="5ffc0f317e429e6b29d4a98ac521c3ce65481bfd22a8cf845fa02a7b113d9b44"

# This runs as root on the server
[ $UID -eq 0 ]

gavinwahl

DROP TABLE IF EXISTS parent;
DROP TABLE IF EXISTS child;

CREATE TABLE parent(
  identity_id integer,
  valid_range int4range
);

CREATE TABLE child(
  valid_range int4range,

infertux

#!/bin/bash
# -*- sh -*-
# vim: ft=sh

: << =cut

=head1 NAME

unicorn_connections - Plugin to monitor the number of Unicorn connections

tenderlove

l={};s=m=[];i=pc=mc=0
alias p proc
h={'>':p{mc+=1},'<':p{mc-=1},'+':p{m[mc]+=1},'-':p{m[mc]-=1},'.':p{putc m[mc]}}
j={'[':->(i){s<<i;->(){pc=l[pc-1]+1 if m[mc]==0}},']':->(i){o=s.pop;l[o]=i;p{pc=o}}}
ins=DATA.each_char.map{|c|c=:"#{c}";x=(j[c]||->(_){h[c]||p{}}).(i);i+=1;x}
while k=ins[pc];pc+=1;m[mc]||=0;k.();end

__END__
[ This program prints "Hello World!" and a newline to the screen, its
  length is 106 active command characters. [It is not the shortest.]

timruffles

class Proc
	def |(g)
		lambda {|*args|
			g.(self.(*args))
		}
	end
end

class Printer

infertux

#!/bin/sh
# -*- sh -*-
# vim: ft=sh

: << =cut

=head1 NAME

axp_pmu - Plugin to monitor power

infertux

--- V3.car	2015-09-18 09:21:11.000000000 +0000
+++ V3.car	2016-04-01 14:51:17.783726416 +0000
@@ -61,16 +61,16 @@
 
 #---------------------------
 [ hover ]
-hAbove = 2.5
+hAbove = 4.0
 hRayLen = 4.0
 

infertux

class CheckOut

  def initialize(rules)
    @items = Hash.new { 0 }
    @pricer = Pricer.new(rules)
  end

  def scan(sku)
    @items[sku] += 1
  end

infertux

(2 * 2 * 5 * 7 * 37 * 149 * 5417 * 148781 * 51939996061871).to_s(16).scan(/../).map { |x| x.hex.chr }.join