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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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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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Slow PC? How to check on tasks that clog system interrupt and DPC requests

If we happen to see the PC is running slowly and, by opening Task Manager, we can see that the system interrupt consumes a lot of CPU, how can we determine which driver to remove?  What it is:  In fact, the interrupt is an asynchronous request that executes a hardware component following its synchronous (execution) event.  In case of an interrupt, …

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How to verify the security of certificates installed in Windows

Sigcheck is a useful tool provided free of charge by Microsoft to check your computer for harmful digital certificates.  You can download it from the Ms-TechNet website.   You can download it from the site, click on  How to use and once you have downloaded the tool and extracted the .zip, open a prompt window on the folder (by pressing the SHIFT key …

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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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