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Category: Software Development

Posted on May 24, 2018May 24, 2018 Perl Software Development

perl =~ operator interprets a RHS expression at run-time

This article starts with a conversation about adjusting compiled perl regular expressions and a sudden realisation – which went a little along the lines of:...

Posted on September 12, 2017September 13, 2017 Software Development SysAdmin

Joining log lines with sed

It’s often the case when analysing system logs that you want to create a summary bringing together data from different lines of a log –...

Posted on August 2, 2017August 2, 2017 Python Random Thoughts

Generating pi (π) using random numbers

I was entertained by Numberphile’s dice-based generation of an approximate of pi  so thought I’d throw together a quick script to try this out: random_vals_pi The...

Posted on September 9, 2016 Perl Software Development

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:...

Posted on August 9, 2016August 9, 2016 Software Development SysAdmin

/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...

Posted on March 1, 2016March 1, 2016 Perl

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...

Posted on August 17, 2015August 17, 2015 Software Development

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...

Posted on August 17, 2015 Software Development

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...

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