Tutorials Index Page 2
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.
In this tutorial, we explain how to change the encoding of a database in PostgreSQL. Use sudo -u postgres psql -C “SHOW SERVER_ENCODING” your_database to display the database encoding. You can create a new database with utf8 using the command: sudo -u postgres createdb -E utf8 your_database. If you already have a database with SQL_ASCII and you want to convert it to utf8 you will need to regenerate it, check here for the full guide.
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.
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.
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.
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.
In this small guide we will setup the alfa awus036nha model for kali linux. We also troubleshoot some common errors with this device and small tutorial on how to use the alfa awus036nh with aircrack ng. Check here the full article!
In this tutorial we are going to add new scripts to nmap, this will allow to do an Advanced vulnerability scanning with Nmap NSE scrips. Follow this simple steps to download new nse scripts and to enable them.
If you want to import an ova generated with virtualbox you will get the error: "Line 65: Unsupported hardware family 'virtualbox-2.2'.". In this tutorial we are going to to create an OVA file compatible with vmware.
In this tutorial, we are going to use raspberry pi has a RTSP Stream viewer for Ubiquiti security camera systems