Alpine Linux

There are several different Alpine versions available. Docker images should probably be based on the Mini Root Filesystem version; Minimal servers should probably be based on the standard ISO, but ...

14 Apr 2019

Linux Disk Management Tools

Background info The old standard for managing disk partitions was via the Master Boot Record (MBR). This was replaced by GUID Partition Table (GPT). This is more flexible, more resilient, allows la...

20 Jul 2018

Hypervisors

A type 1 hypervisor provides virtualisation on a bare metal server. Type 2 runs within an OS. Type 1 hypervisors are more efficient and performant, but offer less flexibility. Also, type 1 hypervis...

09 Feb 2018

Process Monitoring Tools

Sometimes, when a process goes awry, you’ll want to find the pid with ps aux | grep <processname> so that you can kill it. Sometimes, you’ll need tools that let you do more investigating… Yo...

20 Jul 2017

Ruby 2.3 Notes

A few more notes about changes coming in Ruby 2.3

01 Sep 2016

Git Dates

Git commits store two dates: the author date and the committer date. The author date refers to the initial date the commit was first created by the original author. The committer date will be upda...

03 Aug 2016

Ruby Safe Navigation

Tony Hoare came up will Null references in 1965, and later called it a billion-dollar mistake. There are some languages today where null values are not allowed, but ruby isn’t one of them. There i...

21 Nov 2015