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7 Steps to Creating Your First Web App

Watch out! This tutorial is over 2 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

This tutorial details the EASY way to create a simple mobile app, with the bulk of the code running on your web server (we would recommend using Ubuntu with Apache or NGinx on something like a Digital Ocean Droplet). You don’t need to do the actually Android/iOS development bit yourself, but by all means you can skip our step about this and do that end yourself if you want!

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Build Your Own NAS Server (and understanding RAID)

Watch out! This tutorial is over 2 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

While off the shelf storage solutions like NAS can be quite expensive, you can easily build your own storage server with some old hard disks and a disused PC (or even a Raspberry Pi) quite easily. This is great for storing your music, movies or even taking backups of your other machines over something like SAMBA.

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Deploy a Laravel application with Apache on Ubuntu

Watch out! This tutorial is over 3 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

Laravel is a free, open-source PHP web framework, intended for the development of web applications following the model–view–controller (MVC) architectural pattern and based on Symfony. Some of the features of Laravel are a modular packaging system with a dedicated dependency manager, different ways for accessing relational databases and utilities that aid in application deployment and maintenance.

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How to Install a LAMP Stack on Ubuntu 20.04

Watch out! This tutorial is over 3 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

A LAMP (Linux, Apache, MySQL, PHP) stack is a common, free, and open-source web stack used for hosting web content in a Linux environment. Many consider it the platform of choice on which to develop and deploy high-performance web apps (you can also use NGINX as your web server and MariaDB for the database, depending on speed and load requirements).

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Which Distro? Creating your very first Linux VM

Watch out! This tutorial is over 3 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

As a student in the School of Informatics & Creative Arts, you will have access to our very own Cloud Computing Platform at https://xoa.comp.dkit.ie.  You will not only use this for class exercises but also for end of year projects, group collaborations, Docker, Continuous Integration Pipelines and a bunch of other stuff you are not aware of just yet!

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How to clear bash history completely?

Watch out! This tutorial is over 4 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

Sometimes you don’t want to leave commands in the Bash history (accessed with UP key) of your Linux server available to other users, because it may contain some sensitive data like passwords.

This tutorial may help you to control your Bash history file, which is where these commands are actually stored.

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Manage your XenServer or XCP-ng Pool with Xen Orchestra… inside Xen Orchestra!

Watch out! This tutorial is over 5 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

We use Xen Orchestra as the web interface for students to create and manage VMs via our XCP-ng Pool in PJ Carrolls. The login is found at https://xoa.comp.dkit.ie and most students are familiar with this excellent resource. But what if a student wanted to mange their own pool of virtualisation servers in a Specialist Lab, running either XCP-ng or XenServer?

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Leveraging Citrix XenServer Tools

Watch out! This tutorial is over 6 years old. Please keep this in mind as some code snippets provided may no longer work or need modification to work on current systems.

Ideally, you should use the “Quick Instances” and other VM templates provided by our Xen Orchestra Dashboard when creating virtual servers for your project. These have been optimised with tools and drivers designed to get the best performance from your virtual machine, and to access advanced features such as safe shutdown in the event of power outage. But what if your VM was built from scratch, can you still access these tools?

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