programming

Forward data from virtual serial to a network address via TCP socket

Let’s see how to forward data from a virtual serial to a network address.   Step 1 – Choose the serial to use  It is possible to view the list of virtual serial numbers available in the system with the following command:  dmesg | grep tty    Step 2 – Socat  Socat is a very useful tool that is already …

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What are symbolic links between folders and how to use them to increase space on your OS HDD

When we install a large program on Windows, links are created in the registry that help keep track of the real location of the executable files.  For this reason, if we move a program to a secondary partition, it will stop working (the links will stop running).    How do you ensure the continuity of …

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How to calculate hash MD5-SHA1-SHA-256-CRC32 in Windows Linux Mac and online

What they are  Hash are used in computer science to map a string (a sequence of bits) of arbitrary length into a string of predefined length.  It is a sort of ‘signature’ of an electronic document. For each string you can calculate a hash, so each different string will have different hashes.  However, calculating the …

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How to change Ubuntu resolution in VirtualBox

If you have installed Ubuntu Linux in a virtual machine on VirtualBox you will surely realize that by default its resolution is set to 640×480, very poor for any type of use.  You will have also noticed that going on the screen settings it is not possible to change this resolution from the dropdown.      To change the displayed resolution …

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Tutorial RaspberryPi: models – setup – first boot – configuration in a nutshell

A quick guide to the world’s cheapest and best-known Linux-ARM platform  Models – Connections – Setup – Installation – Booting – Configuration commands – Linux commands – Tricks  Introduction  What is Raspberry Pi Raspberry Pi was conceived from the idea of creating a low-cost computer.  In particular, a card that is able to run a linux distribution with …

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cUrl list of the most used and pratical commands of the powerful open source networking tool

What is cUrl  cUrl is an open source object programming language, it’s very useful in web applications where a strong inter-compatibility between protocols and documents is required.    In particular, it avoids the developer having to use multiple programming languages, making  a single framework available in a series of functions combined between markup (HTML or JS) and computational languages (Java, C#, C++…).    …

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How to create a shared folder on linux in few step

A simple guide to create a shared folder accessible and writable from any device on the local network.  Valid for Ubuntu, Debian, RaspberryPi, etc…  Warning: this is one of the simplest and shortest procedures and creates a public folder; to create folders with users and passwords the procedure is more complicated.   1. install samba sudo apt-get …

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