Computer devices and phones used in outer space or outside the planet earth require some modification. These devices must be designed to withstand extreme space conditions and to operate in a near-absolute vacuum. Similarly, storing data in space requires specific devices such as magnetic tapes and solid state disks (SSDs). The challenge with magnetic tapes …
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 …
Forward data from virtual serial to a network address via TCP socket Read More »
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 …
How to calculate hash MD5-SHA1-SHA-256-CRC32 in Windows Linux Mac and online Read More »
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 …
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 …
How to create a shared folder on linux in few step Read More »
In case you need to access a partition with an ext2, ext3 or ext4 file system from Windows (maybe because you have used it with Linux up to that moment), you will have to use a little trick. MOUNTING THROUGH SHELL If you prefer not to install any software in Windows, you can use a Linux LIVE distribution …
How to read EXT3 and EXT4 partitions from Windows Read More »
To create an Apache-based web server, using a common Ubuntu or Debian machine, proceed as follows. 1. Install Apache sudo apt-get update sudo apt-get install apache2 To check if it’s correctly installed, go to the site localhost you should find ‘It works! 2. Configuration All configuration files can be found in “/etc/apache2” this can be displayed via …
Install and configure Apache web-server on Ubuntu or Debian (RaspberryPi) Read More »
If you are using VirtualBox frequently, you will have found yourself in the situation of having to move files from the Host machine (the main system) to the Guest machine (the emulated system). To do this, if you use Windows as Guest (in the VM), there are no problems. In this case it will …
How to access shared Virtualbox folders from Ubuntu or generally from Linux Read More »
This is a common occurrence where you receive at least one rejection email with the following Message Delivery Status (or Subsystem), as a result of sending it to a problematic or non-existing address. So to check if an address actually exists or ‘receives’ mail you could simply send an email to that address (with the ‘delivery notification’ flag active) …
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While using your RaspberryPi intensively, you may find yourself in an unfortunate situation where the X server fails to boot up. There may be several causes: a crash, deletion of system files, or a failed update. In all cases, when starting up, you would see an error like the one below, which notifies us of the failure to start …
How to replace the Debian desktop on RaspberryPi Read More »
