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David Costello

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Author: @davidcostello42

Forgotten your MySQL root password? No problem!

6th May 201715th September 2017 @davidcostello42

I recently forgot the root password to a MySQL instance on one of my machines. Follow this quick and easy guide for whenever this happens to you. Stop MySQL sudo […]

 Programming, Security  Command Line, MySQL, Programming, Security, SQL  Leave a comment

Let’s Encrypt for Apache on the Raspberry Pi

4th May 20172nd January 2018 @davidcostello42

Over the past six months I have had all sorts of issues with SSL on my home server powered by a Raspberry Pi. Originally I was using a free Class 1 […]

 Internet, Programming, Security  Programming, Raspberry Pi, Security, SSL  Leave a comment

Summertime/DST in programming; Do’s and Dont’s

14th March 20178th September 2017 @davidcostello42

There has been some fantastic examples over the years of companies getting things wrong with Daylight Savings changes. Probably the most notorious has to be the iPhone and how for […]

 Programming  C#, Dates, DateTimes, Java, Programming, Rants, Time  Leave a comment

Raspberry Pi – Setup steps

14th February 20178th September 2017 @davidcostello42

This is a quick guide for getting a Raspberry Pi with Raspbian up and running. This article is aimed at those with some technical experience of the Unix Shell and […]

 Computing  Command Line, Learning, Linux, Raspberry Pi  Leave a comment

Code Scraps: Random unique colour generation

18th November 201615th September 2017 @davidcostello42

I have worked on a number of social projects over the years which have involved message boards or social posting features by users.  On some websites like Microsoft’s message boards or StackOverflow […]

 Code Scraps, Programming  Data, Data Formatting, PHP, Programming, Random  Leave a comment

Code Scraps: Word list tidying

8th October 201615th September 2017 @davidcostello42

I have recently been messing around with dictionary lists for a little personal project. My goal has to been to make an anagram/word finder, where you provide up to 9 letters […]

 Code Scraps  Data, Data Formatting, Programming  Leave a comment

Is GIT really a better choice than SVN?

6th October 201615th September 2017 @davidcostello42

First of all, I should point out I actually like GIT. That’s important to state as this article may seem very negative. What follows is a semi-rant about how GIT […]

 Internet, Programming, Security  Enterprise, GIT, Programming, Security, Source Control, SVN  Leave a comment

Basic configuration for iptables (suitable for Raspberry Pi)

25th September 201615th September 2017 @davidcostello42

This is just a quick post for my own personal benefit to remind me what commands to use when setting up iptables rules. If you want to configure a firewall […]

 Programming, Security  Command Line, Firewall, Linux, Raspberry Pi  4 Comments

Learning to program – some tips & tricks

8th September 201615th September 2017 @davidcostello42

If you want to start learning to program, there has never been a better time. The huge popularity of the Internet means there are vast amounts of help, documentation and […]

 Internet, Programming  Learning, Nostalgia, Programming  Leave a comment

Internet Nostalgia: Microsoft Comic Chat

30th August 201625th June 2018 @davidcostello42

Earlier in the life of the Internet the main form of on-line real-time communication with others was done through chat rooms based on the IRC protocol. IRC clients such as […]

 Internet  Chat, IRC, Nostalgia, Social  2 Comments

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