Which ssh publickey was used to access an account
When you have more than one public key set up to be able to access a single account (ie more than one public key listed...
bandwidth measurement using netcat
For plain bytes/second bandwidth testing – ie without taking things like encryption overhead and compression improvements into account – the netcat command-line utility is pretty...
Cache::FileCache Thoughts
If using perl Cache::FileCache, some comments offering a helpful starting point to get a cache that works in a relatively well behaved and unsurprising way:...
/usr/bin/base64 – copying and pasting code / patches betweeen terminals
The Scenario A couple of terminals open, connected to a mix of your own workstation, local development servers and remote servers running on a different...
Perl Gotcha : xor precedence
Perl has a logical xor operator but it happens to be at the very bottom of the precedence priority list , importantly below the humble...
Avoiding Custom Internet Explorer Error Pages
A bit more of a short and to the point comment rather than an actual article. Various web browsers used to display a “helpful” page...
Docker FROM debian:latest
So in my last article I created a Docker container with nothing but a statically compiled helloworld in it. That demonstrated how it’s possible to...
Docker FROM scratch
Docker is a framework which makes it easy to wrap linux applications in “containers” – a sort chroot’d jail but with tools to take away...
Getting WordPress Up and Going
Setting up WordPress server there were a couple of minor wrinkles to sort out. I’ve run a blog before before and that fell by the...
Protecting Joomla : User-Registration Spam Relay
The Problem: A Default Setting By default user registration is enabled. It’s important to realise that even though links to the user registration page may...