silentgiant oxidizeddreams

Here's a few things I tried to write output to a python subprocess pipe.

from subprocess import Popen, PIPE

p = Popen('less', stdin=PIPE)
for x in xrange(100):
    p.communicate('Line number %d.\n' % x)

This configuration is no longer updated

MySQL

Getting started

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

Recently, Everyday Hero has been doing a heap of work around the automation and provisioning of resources with AWS cloud services. This entails working frequently with the AWS API.

A useful filter we have been using in Ansible is taking output from a shell action and turning it into something we can consume via variables.

An example playbook is below:

	/**
	* Infix to postfix notation RegExp converter
	*
	* To implement RegExp machine (NFA, DFA) we need
	* to transform first RegExp string to postfix notation
	* for more convinient work with the stack. This function
	* does exactly this.
	*
	* See: http://swtch.com/~rsc/regexp/regexp1.html
	*

	#!/usr/bin/python

	# All SSH libraries for Python are junk (2011-10-13).
	# Too low-level (libssh2), too buggy (paramiko), too complicated
	# (both), too poor in features (no use of the agent, for instance)

	# Here is the right solution today:

	import subprocess
	import sys

	#!/bin/bash
	#
	#########################################################################
	#This software code is made available "AS IS" without warranties of any #
	#kind. You may copy, display, modify and redistribute the software #
	#code either by itself or as incorporated into your code; provided that #
	#you do not remove any proprietary notices. Your use of this software #
	#code is at your own risk and you waive any claim against Amazon #
	#Digital Services, Inc. or its affiliates with respect to your use of #
	#this software code. (c) 2006-2007 Amazon Digital Services, Inc. or its #

	#!/bin/bash
	#
	# --------------------------------------------------------------------
	# This is a free shell script under GNU GPL version 3.0 or above
	# Copyright (C) 2005 ReFlectiv project.
	# Feedback/comment/suggestions : http://www.reflectiv.net/
	# -------------------------------------------------------------------------
	#
	# This script automatically set up a new Debian server (IMPORTANT : Debian!), by doing these actions :
	#