MacOS X – Managing Gatekeeper (Terminal)

Gatekeeper is a feature available on MacOS X systems to block, by default, any application that is not installed from the Apple Store, for security reasons (all apps on Apple Store are validated and certified by the original developers). Let’s see how to manage this feature on MacOS X systems by accessing to it using command line (using Terminal). Read More …

Check Bluetooth version available on Windows, Linux and Mac

Bluetooth is one of the most common method/technology used to transfer the files between a mobile device and the computer, connecting to gaming devices and wireless speakers, but many times the version of Bluetooth is not supportive which creates issues in connecting and transferring the files. While most of the “smart” devices today support Bluetooth 4.0 or later, you won’t be really able to transfer the files if your Windows 10 system is not supporting at least Bluetooth 4.0. Read More …

Python – Pandas – Converting XLSX to Dictionary (key and values)

During data import process in a Jupyter Notebook, using Python and Pandas module for data science, we would need to manipulate or import directly an Excel file into a notebook and transfor all the data into a dictionary, so in this article we will focus on this particular need. Read More …

VMware ESX – Shared Disk Between VMs

In VMware virtualization environments (as a rule in clustering scenarios) it may be necessary to share the same disk (vmdk or RMD) between 2 (or more) virtual machines (VMs) on VMWare ESXi. The most optimal way is to use the vmdk disk physically located on the shared storage or locally on the ESXi host and this can be done following some specific configurations to be able to access data between different VMs on the same storage. Read More …

Direct Broadcast Address (DBA)

With directed broadcast, all recipients are always addressed within the target network. A combination of the number of the target network and the setting of all host bits to 1 produces the broadcast address in this case. If the destination is not located in its own (sub-) network, a router forwards the data packet. Read More …