Useful tips for everyday
What is the run folder? Modern Linux distributions include a /run directory as a temporary filesystem (tmpfs), which stores volatile runtime data, following the FHS…
Can a blind person get an eye transplant and see again? There is no such thing as a whole-eye transplant. The optic nerve, which goes…
Why it is difficult to communicate verbally when underwater? It is true that sound wave travel faster in water than in air, but the sound…
How do you right click and left-click on a Mac? Hold the “control” button as you click. While the control button is held, you can…
What is wide column database used for? Wide-column databases are ideal for use cases that require a large dataset that can be distributed across multiple…
How do I convert a PDF to txt? Save the whole document as a text file Open the PDF saved to your computer using Adobe’s…
How do I restrict messages on iPhone? 1. Go back to Settings > General and select Restrictions. If you’ve already set up restrictions, you’ll be…
What happens when two magnets are separated? The magnetic field of a magnet is the area around it in which objects that are metal are…
What does ETC shells do? The /etc/shells is a Linux / UNIX text file which contains the full pathnames of valid login shells. This file…
How to reduce pulse voltage? The essence of this circuit is that the high voltage pulse generation relies on V=L* di/dt. Reducing the resistance of…