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My Computing Area

Personal Computer

Personal Computer section

Web based utiliites

ASCII generator


Networking section

Video Games

Video Game

Programming & Scripting

TIOBE Programming Community Index

My Jupyter notes


My ASN.1 Notes




My C++ Notes

C Sharp

My C Sharp Notes

Parallel programming

Multi-threaded TCP server in C#


My Eclipse pages

Eclipse IDE tools

Eclipse tutorials


My Python notes


My Lua Notes

Lua is a powerful, fast, lightweight, embeddable scripting language.

shell scripting





My Java Notes


JavaWorld is an ad covered site that offers how-to articles, news stories, and other information on Java development. is a source for Java information

Java guru has articles and training material



My Node.js notes


apilayer Automate What Should Be Automated. Unparalleled suite of productivity-boosting Web APIs & cloud-based SaaS Applications for developers and companies of any size.

REST Countries Get information about countries via a RESTful API

Version control systems


Pijul is a free and open source (GPL2) distributed version control system. Its distinctive feature is to be based on a sound theory of patches, which makes it easy to learn and use, and really distributed.


My git notes

Git documentation

Database stuff


My PostgreSQL Notes

MySQL & MariaDB

My MySQL & MariaDB Notes section (contains some MariaDB stuff)

Regular Expressions

Regex101 site (very handy online checker and pretty) Regex Library

IPv4 address example


IPv6 address examples (hexadecimal formats only)

Long form only:


Medium form that allows leading zeros in hextet:


Medium form that does not allow leading zeros in hextet:


Some test formats:




0fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF (invalid due to leading 0 in first hextet group)

My regex notes for checking an ASN.1 GeneralizedTime type

General (my wording!)

  • ^ means start of string
  • () means capture everything inside
  • | means or, aka "pipe" key
  • [] means single character with rules, rules are inside square brackets
  • \d means any digit
  • {} means quantity with specified conditions
  •  ? means zero or one of previous character
  • $ means end of string

Regex based on US requirements for time (within 200ms of event time) plus optional Z offset:


Regex explained

  • ^20(19|20) = string starts with exactly 20 followed by 19 or 20 (match year "YYYY format")
  • ([0][1-9]|[1][0-2]) = next two characters must match either [0][1-9] or [1][0-2], which means 01-09 or 10-12 (match month "MM format")
  • ([0][1-9]|[1-2][\d]|[3][0-1]) = next two characters must match either [0][1-9] or [1-2][\d] or [3][0-1], which means 01-09 or 10-29 or 30-31(match day "DD format")
  • ([0-1][\d]|[2][0-4]) = next two characters must match either [0][\d] or [1][\d] or [2][0-4], which means 00-09 or 10-19 or 20-24 (match hour "HH format" in 24-hour format)
  • ([0-5][\d]) = next two characters must match [0-5][\d], which means 00-59 (match minutes "MM format")
  • ([0-5][\d]) = next two characters must match [0-5][\d], which means 00-59 (match minutes "SS format")
  • . = next character must be . (period)
  • \d{1,3} = next 1 to 3 characters must be any digit (match milliseconds .f, .ff, .fff format)
  • Z? = next character must be zero or one of Z (capital Z). Zero Z means Z is missing
  • $ = end of string (no following characters)

Take examples, like 20190822005901.9Z, 20190801230059.09Z, 20190822005901.991Z, and play around in Regex101 online tool

Miscellaneous Stuff

Let's Encrypt

Everyone should encrypt everything, end-to-end!

User Guide Manual

User Guide renewing certificates


Red Hat Ansible is a universal language, unraveling the mystery of how work gets done. Turn tough tasks into repeatable playbooks. Roll out enterprise-wide protocols with the push of a button. Give your team the tools to automate, solve, and share.


Haxe is an open source toolkit based on a modern, high level, strictly typed programming language, a cross-compiler, a complete cross-platform standard library and ways to access each platform's native capabilities.

Action Script 3.0

Action Script


Gosu is a programming language for the Java Virtual Machine (JVM).

Storage Solutions

Building a home NAS system on Linux

Gaming Technologies


BigWorld Technology

Graphic Input Devices

Article about Best drawing tablet of 2018

Interesting Hardware Articles

Benefits from larger amounts of RAM

drive slag data destruction method

Operating System stuff

Linux area

Solaris area

Windows Operating System

Software stuff

My software notes section

Video Voice Fax companies

Consilient Technologies

VoiceAge is the forerunner in the development and dissemination of wideband speech and audio compression technologies in the wireless, internet and multimedia fields.

general stuff

Open Systems

Dreamhost section

web development

Old Computer Stuff

Multimedia Center Hardware


Fun stuff

Greg's cable map

Females in technology resources

Django Girls is a non-profit organization and a community that empowers and helps women to organize free, one-day programming workshops by providing tools, resources and support.

Kansas City Women in Technology a grassroots organization helping to grow the number of women in technology careers in Kansas City.

Why I don't use Apple products

Richard Stallman sums up the reasons I don't use Apple. No reason to duplicate.

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