Natural Born Coder

Category: Linux

  • Udacity Computer Networking Course Notes

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    doozer
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    I’ve just started the Udacity course on Computer Networking and I’ve hit a few bumps along the way so I thought I’d document them here for others to find.

  • Mininet Waiting for Network Configuration

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    doozer
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    I recently started taking the Udacity course on Computer Networking and while it looks like a good course it suffers from the same problem all the Udacity courses seem to suffer from: really badly put together examples and quizzes. It’s a shame because the material itself is generally of a really high quality. The problem I…

  • Using PuTTY for Key-Based SSH Login

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    doozer
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    If you are on Windows and need to “shell” into a Linux machine then PuTTY is the tool of choice. For password based logins it’s as simple as entering the IP address or name of the machine you want to connect to but for key based logins things get a little more complicated. This guide…

  • WobblyStack – A Single Node OpenStack Install

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    doozer
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    For a couple of years now I’ve run a small VMWare virtualization system for my business. Broadly speaking it’s gone well and been fairly uneventful. The only panic came when I transitioned from the free to the small business version of the software – I installed more memory than was allowed in the free version,…

  • VirtualBox Additions on the Cloudera Training Machine

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    doozer
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    I was playing with the Cloudera training virtual machine (as supplied by the Intro to Hadoop and MapReduce course over on Coursera) today and I installed it into VirtualBox as suggested by the instructor notes. I must have hit every pot-hole on the way through though so I thought I’d document them here for anyone else…

  • Only detected a i686

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    doozer
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    One of the servers I manage is currently running Ubuntu 12.04 (Precise Pangolin) but in a little over a month 14.04 (Trusty Tahr) will be making an appearance. Now there’s no good reason for me to be rushing out an upgrading but it’s got to be done at some point so I thought I’d get…

  • Installing mod_pagespeed on Ubuntu

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    doozer
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    The mod_pagespeed extension is designed to reduce the load time of pages on a web site by performing certain optimizations such as  optimizing images and minifying CSS and JavaScript. This guide covers installing mod_pagespeed on an Apache server running under Ubuntu 12.04. The process should be the same for later versions of Ubuntu as well.

  • Improving Joomla Performance

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    doozer
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    I recently tested this site using this online website performance tool: Web Page Test and I thought I’d share some of the results and what I did to improve them. You can also try YSlow however this will generally give you a result that is across a LAN rather than a DSL type connection and I’ve noticed it…

  • Oracle VM Virtual Install

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    doozer
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    A project I have running at the moment may require the fairly rapid deployment of a number of servers so I decided to get a head start and have a play with Oracle VM 3 (and as Wikipedia says – don’t confuse that with Oracle VM VirtualBox).

  • Problems After Upgrading to Kubuntu 11.10

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    doozer
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    I’ve upgraded a few machines to Kubuntu 11.10 recently and they have all suffered from the same problems after the upgrade. All were machines that have been upgraded from 10.10 so it may not be an issue if you start from 11.04. Likewise these issues probably don’t affect clean installs of 11.10.

  • Install x2go on Ubuntu Oneiric

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    doozer
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    This article will take you step by step though installing the x2go server on your Ubuntu Oneiric based machine. The x2go server offers remote desktop access to you machine meaning that you can virtually sit at the machine from anywhere in the world. Unlike some other remote desktop systems x2go uses powerful algorithms to compress…

  • Installing Maven on Ubuntu 11.10

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    doozer
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    For some reason I can’t possibly fathom Linux seems to have a downer on all things Java. Packages are available for most things but they are invariably not the latest version which means performing a manual install – not the end of the world but irritating when you can just install a package for most…