Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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Elastic search with python
In this tutorial, we are going to use python and elastic search. We are going to cover from scratch how to use elastic search using python. The tutorial could be read by python and elastic search beginners.
Bitcoin electrum wallet install from source code
In this tutorial, we are going to install all bitcoin electrum dependencies from source code and make it work with PyQT5. we provide a step by step tutorial to install bitcoin electrum.
Install dropbox from source in debian stretch
In this brief tutorial we are going to explain how to build dropbox from the source code in Debian Stretch
How to create ldap users using a python script
In this tutorial, we are going to create a script to create many users on ldap. The input of the script will be a csv file with a list of users. You can later modify the script for your needs, like adding click library to create individual users.
How to configure L2TP VPN on the UniFi Security Gateway?
In this tutorial, we are going to configure the UniFi USG VPN (L2TP) for remote access using a VPN. The whole tutorial is 3 steps and a fourth optional for VPN client configuration. The first step is enabling the radius server, the second the user creation and the third one is where you create the VPN network using L2TP type. No advance knowledge is required to follow this steps.
Understanding the go scheduler
The scheduler tries to use a small number of kernel threads to support high concurrency. It will leverage parallelism to scale to many cores. In this tutorial, we explain with some details how the go scheduler works to distribute goroutines over kernel threads.
Introduction to asynchronous networking programming with go
With go you don’t have threads, you have goroutines which are very cheap in terms of stack and scheduling. Go has a scheduler which works like an event loop, but it allows the developer to forget about events, queues, saving state, etc. Check our tutorial to learn to go networking programming.
Ubuntu upgrade postgres to version 10
In this tutorial we are going to upgrade PostgreSQL 9.X to 10. The following steps will work for Ubuntu 14.04, 17.04 and 16.04. Check our guide for easy upgrade with some troubleshooting also.
Flask abort with json example
In this short tutorial we show an example on how to return a json when using flask.abort: abort(jsonify(message="Message goes here"), 400). See alse an alternative using flask handlers to return a json.
linux hardware info command: inxi
In this tutorial we use inxi to show software and hardware information. Inxi command will show all the information several commands shows like lscpu, hwinfo, lshw, dmidecode, lspci. You can install inxi from official repositories of well know linux distros.