First Steps on a New Virtual Private Server – an Example on DigitalOcean and Ubuntu 16.04 LTS

These short notes list example first steps when manually configuring a new virtual private server on DigitalOcean and configuring a DNS name on NameCheap. Always use good passwords. Only good passwords. Good passwords every moment.

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Hello Flask Web App – Python 3 Flask Development Server Install on Ubuntu 16.04

You can create web apps with Python and Flask. This short “Hello World” tutorial shows you how to install development server for Python 3 and Flask. There are two very successful Python web frameworks. Flask is the simple one, Django … Continue reading

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Hello Go world – Install and Run Go in Less Than a Minute on Ubuntu 16.04 LTS

Go is a new programming language. It’s similar to C++, but aims to be simpler, safer and tries to support parallel operations better. Installing Go and running “Hello world” takes less than a minute. This short tutorial shows you how … Continue reading

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Hello CFEngine – CFengine3 on Ubuntu 16.04 Xenial

This article shows you how to install CFEngine 3 on Ubuntu and write a simple “Hello World” program. Modern configuration management systems let your describe your infrastructure as code in an idempotent way. You define the target state of your … Continue reading

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PostgreSQL Install and One Table Database – SQL CRUD tutorial for Ubuntu

PostgreSQL is a popular database used often with Python Django, Python Flask and many other frameworks. It’s known for reliability and being very ACID. In this tutorial, you’ll learn to Install PostgreSQL Server and Client on Ubuntu Create, read, update … Continue reading

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Install PostgreSQL on Ubuntu – New user and database in 3 commands

Installing PostgreSQL is trivially easy. You just have to use the same name for linux user, database user and the database name.

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MySQL Install and One Table Database – SQL CRUD tutorial for Ubuntu

MySQL is the most popular multi-user database. In this tutorial, you’ll learn to Install MySQL Server and Client on Ubuntu Automate MySQL login Create, read, update and delete data (CRUD)

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New Default Website with Apache2 – Show your homepage at top of example.com, no tilde

Install the most popular web server in the world, Apache. Put your homepage on a simple URL, like http://example.com. You don’t need tilde or username (no http://example.com/~tero)

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Salt Master-Minion with Ubuntu 14.04 LTS – Control Your Slaves over the Internet

Would you like to control many computers (slaves, minions) from one master computer? Salt-minions connect to master to retrieve instructions. Slaves then configure themselves to the target state: they install software, make settings and start daemons.

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Hello Puppet revisited – on Ubuntu 12.04 LTS

Learn “Hello Puppet World” in 5 minutes. Write one-liners & modules. Meet the configuration management system used by Google and Wikipedia.

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Javascript Basics – variable function loop if-then-else print

Learn the very basics of Javascript: variables, functions, loops, if-then-else and printing. Run the short example in your browser, then view the source. Knowing the basics will make it more fun to jQuery/PhoneGap/Cordova/ProcessingJs.

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Processing.js Graphics in PhoneGap/Cordova – Example for Android

Create simple graphics and animations with Processing.js. You can publish your games and graphics as Android Apps with Cordova. Cordova (aka PhoneGap) allows you to write Android and IOS apps with HTML5 and Javascript.

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Hello WSGI – Python mod_wsgi on Ubuntu 12.04 LTS & Apache2

Run Python on your web server. In this article, we start with xUbuntu 12.04 LTS live CD and install the whole stack from scratch. Mod_wsgi is the recommended way to install Django and many other web frameworks.

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Hello PhoneGap – from xUbuntu 12.04 Live CD

Install PhoneGap development environment and emulator from scratch. Start writing Android applications with Javascript and HTML. Guru version Hello Android $ sudo apt-get -y install ia32-libs eclipse Eclipse: Help: Install New Software. https://dl-ssl.google.com/android/eclipse/. Install Android 2.2. New Android Virtual Device? … Continue reading

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Hello Puppet – on Ubuntu 12.04 LTS

Read new, revisited version of Hello Puppet World. Now with one-liner & module! Old version below. >> Move to new version >>>

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Getting Started with OpenLayers and OpenStreetmap

Add a free, interactive map on your homepage. Just plain HTML5 and JavaScript, no special server needed. Live demo with source. No API keys needed. And if you really like it, you can later download planet vector data for free! … Continue reading

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Short HTML5 page

Start writing your HTML5 page with this “Hello world”. Test your page with validator.w3.org. Charset is needed for scandics and other special characters. Short valid HTML page <!doctype html> <html> <head> <title>Tero’s Test Page</title> <meta charset=”utf-8″ /> </head> <body> <h1>Tero’s … Continue reading

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