Developer blog

Ethereum development environment setup in Ubuntu 18

How to install Truffle and Ganache in Ubuntu 18.04 This article is an updated version of my 2017 guide to setting up a Ethereum development environment. In the time since the original article smart contracts have continued to grow in popularity and the range of available development tools have increased in sophistication. To facilitate rapid smart contract development in Ubuntu 18 this guide will describe 2 excellent tools from the Truffle suite: Truffle and Ganache.

HTTP/2 with NGINX & Wireshark in Ubuntu (Part 2)

Part 2: Docker install and container build This article continues the environment setup by describing how to install Docker and configure a Docker container running NGINX web server with HTTP/2 and HTTPS in Ubuntu 18. Previously… Check out these previous articles which describe setting up the environment and configuring NGINX web server for HTTP/2: Install Ubuntu 18 in VirtualBox HTTP/2 with NGINX & Wireshark in Ubuntu (Part 1) Install Docker Now we are ready to install Docker and build a container running NGINX.

HTTP/2 with NGINX & Wireshark in Ubuntu (Part 1)

Introducing HTTP/2 HTTP/2 is the latest version of the HTTP protocol and offers several performance improvements, including multiplexing and server push. IETF, the standards organisation responsible for the development of HTTP, describes this latest version on their HTTP/2 website: “HTTP/2 is a replacement for how HTTP is expressed “on the wire.” It is not a ground-up rewrite of the protocol; HTTP methods, status codes and semantics are the same.

Windows 10: Upgrade VirtualBox from 5.x to 6.x

This article describes how to upgrade VirtualBox from version 5.x to 6. Manually upgrade VirtualBox to 6.0 in Windows 10 In my case I was upgrading from Version 5.2.26 to 6.0.4. Note: VirtualBox 6.0 discontinued support for 32-bit hosts. If your host OS is not 64-bit you should not upgrade and must continue running VirtualBox 5.2. Download the installer by launching your favourite browser and navigating to https://www.virtualbox.org/wiki/Downloads:

Windows 10: Install Ubuntu 18 in VirtualBox

Getting started with Ubuntu 18 in VirtualBox This article will step through how to install Ubuntu on Windows 10 using VirtualBox. For this turotial I’ll be using Windows 10 Pro 64-bit (the host) and explain how to run Ubuntu 18.04.1 (the guest) as a virtual machine. Step 1: VirtualBox installation If you already have a working installation of VirtualBox you may skip this section. First, download VirtualBox from https://www.

Windows 10: Update VirtualBox

This quick Windows 10 tip describes how to manually update VirtualBox in Windows 10. You can simply download the new version of VirtualBox and run the installer - any existing installation of VirtualBox will be automatically updated. Manually update VirtualBox in Windows 10 In my case I was updating from Version 5.2.16 to 5.2.26. You may be seeing this message whenever you launch VirtualBox and have decided now is the time to update:

Hugo Shortcodes: Links with target="_blank"

If you do a lot of content development with Hugo then you have probably noticed that by default there is no way to specify the target attribute of a URL. This is especially important when you want a link to launch in a new browser tab. This solution uses Shortcodes. The Hugo documentation defines a shortcode as “a simple snippet inside a content file that Hugo will render using a predefined template”.

Windows 10: How to turn on Bluetooth

If you have ever wondered “how do I turn on Bluetooth in Windows”, you have found the answer. Bluetooth is a short-range wireless technology popular for wireless audio, headsets, and many other uses. How to turn on bluetooth in Windows 10 Click the Start button and select the Settings icon to open Settings Alternatively, you can click Start and type settings, then select the first result. Click the Devices icon

Install VirtualBox Guest Additions in Ubuntu 18

How to install VirtualBox Guest Additions in Ubuntu 18.04 This article will step through how to install VirtualBox Guest Additions in Ubuntu 18 running on Windows 10. For this turotial I’ll be using Windows 10 Pro 64-bit (the host) and describe how to install Guest Additions in Ubuntu 18.04.1 (the guest). Step 1: Update Ubuntu First, make sure Ubuntu is up to date before proceeding. Open a terminal and enter the below commands:

Ubuntu 18: How to check for updates

How to check for updates in Ubuntu 18 Desktop This article will describe how to check for updates in Ubuntu 18 Desktop. In the lower left corner click the Dash button to show applications: In the search field type updater then click the Software Updater icon A prompt will appear - wait for it to finish checking for available updates. If there are available updates you will then get another prompt asking if you want to download them.